diff --git a/java/com/android/dialer/theme/base/res/values/theme_dialer_dark.xml b/java/com/android/dialer/theme/base/res/values/theme_dialer_dark.xml
index 4b50340..142bb89 100644
--- a/java/com/android/dialer/theme/base/res/values/theme_dialer_dark.xml
+++ b/java/com/android/dialer/theme/base/res/values/theme_dialer_dark.xml
@@ -56,7 +56,7 @@
     <item name="colorControlActivated">?android:attr/colorPrimary</item>
 
     <!-- Dialer specific attributes. -->
-    <item name="colorIcon">@color/google_grey_400</item>
+    <item name="colorIcon">?android:attr/textColorSecondary</item>
     <item name="colorIconSecondary">?android:attr/textColorSecondary</item>
     <item name="colorTextOnUnthemedDarkBackground">@android:color/white</item>
     <item name="colorIconOnUnthemedDarkBackground">@android:color/white</item>
diff --git a/java/com/android/dialer/theme/common/res/values/colors.xml b/java/com/android/dialer/theme/common/res/values/colors.xml
index 6fea436..1831862 100644
--- a/java/com/android/dialer/theme/common/res/values/colors.xml
+++ b/java/com/android/dialer/theme/common/res/values/colors.xml
@@ -16,7 +16,7 @@
   -->
 <!-- The colors in this file aren't configured at the theme level. -->
 <resources>
-  <color name="dialer_call_green">#34A853</color>
+  <color name="dialer_call_green">#00C853</color>
   <color name="dialer_end_call_button_color">#BD2A2A</color>
   <color name="dialer_divider_line_color">#D8D8D8</color>
   <color name="dialer_link_color">#2A56C6</color>
diff --git a/java/com/android/incallui/AnswerScreenPresenter.java b/java/com/android/incallui/AnswerScreenPresenter.java
index 35290de..8b789f3 100644
--- a/java/com/android/incallui/AnswerScreenPresenter.java
+++ b/java/com/android/incallui/AnswerScreenPresenter.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.os.SystemClock;
+import android.support.annotation.FloatRange;
 import android.support.annotation.NonNull;
 import android.support.v4.os.UserManagerCompat;
 import android.telecom.VideoProfile;
@@ -215,6 +216,14 @@
     }
   }
 
+  @Override
+  public void updateWindowBackgroundColor(@FloatRange(from = -1f, to = 1.0f) float progress) {
+    InCallActivity activity = (InCallActivity) answerScreen.getAnswerScreenFragment().getActivity();
+    if (activity != null) {
+      activity.updateWindowBackgroundColor(progress);
+    }
+  }
+
   private class AnswerOnDisconnected implements DialerCallListener {
 
     private final DialerCall disconnectingCall;
diff --git a/java/com/android/incallui/AnswerScreenPresenterStub.java b/java/com/android/incallui/AnswerScreenPresenterStub.java
index a96fee3..e85fdaa 100644
--- a/java/com/android/incallui/AnswerScreenPresenterStub.java
+++ b/java/com/android/incallui/AnswerScreenPresenterStub.java
@@ -16,6 +16,7 @@
 
 package com.android.incallui;
 
+import android.support.annotation.FloatRange;
 import com.android.incallui.answer.protocol.AnswerScreenDelegate;
 import com.android.incallui.incalluilock.InCallUiLock;
 
@@ -49,6 +50,9 @@
   public void onAnswerAndReleaseButtonDisabled() {}
 
   @Override
+  public void updateWindowBackgroundColor(@FloatRange(from = -1f, to = 1.0f) float progress) {}
+
+  @Override
   public boolean isActionTimeout() {
     return false;
   }
diff --git a/java/com/android/incallui/InCallActivity.java b/java/com/android/incallui/InCallActivity.java
index fa4a06e..3ff1d26 100644
--- a/java/com/android/incallui/InCallActivity.java
+++ b/java/com/android/incallui/InCallActivity.java
@@ -25,8 +25,12 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Configuration;
+import android.graphics.drawable.GradientDrawable;
+import android.graphics.drawable.GradientDrawable.Orientation;
 import android.os.Bundle;
 import android.os.Trace;
+import android.support.annotation.ColorInt;
+import android.support.annotation.FloatRange;
 import android.support.annotation.IntDef;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
@@ -36,6 +40,7 @@
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
 import android.support.v4.content.res.ResourcesCompat;
+import android.support.v4.graphics.ColorUtils;
 import android.telecom.Call;
 import android.telecom.CallAudioState;
 import android.telecom.PhoneAccountHandle;
@@ -132,6 +137,7 @@
   private Animation dialpadSlideInAnimation;
   private Animation dialpadSlideOutAnimation;
   private Dialog errorDialog;
+  private GradientDrawable backgroundDrawable;
   private InCallOrientationEventListener inCallOrientationEventListener;
   private View pseudoBlackScreenOverlay;
   private SelectPhoneAccountDialogFragment selectPhoneAccountDialogFragment;
@@ -150,6 +156,7 @@
   private boolean isVisible;
   private boolean needDismissPendingDialogs;
   private boolean touchDownWhenPseudoScreenOff;
+  private int[] backgroundDrawableColors;
   @DialpadRequestType private int showDialpadRequest = DIALPAD_REQUEST_NONE;
   private SpeakEasyCallManager speakEasyCallManager;
   private DialogFragment rttRequestDialogFragment;
@@ -867,6 +874,11 @@
 
   public void onForegroundCallChanged(DialerCall newForegroundCall) {
     updateTaskDescription();
+
+    if (newForegroundCall == null || !didShowAnswerScreen) {
+      LogUtil.v("InCallActivity.onForegroundCallChanged", "resetting background color");
+      updateWindowBackgroundColor(0 /* progress */);
+    }
   }
 
   private void updateTaskDescription() {
@@ -880,6 +892,58 @@
             getResources().getString(R.string.notification_ongoing_call), null /* icon */, color));
   }
 
+  public void updateWindowBackgroundColor(@FloatRange(from = -1f, to = 1.0f) float progress) {
+    ThemeColorManager themeColorManager = InCallPresenter.getInstance().getThemeColorManager();
+    @ColorInt int top;
+    @ColorInt int middle;
+    @ColorInt int bottom;
+    @ColorInt int gray = 0x66000000;
+
+    if (isInMultiWindowMode()) {
+      top = themeColorManager.getBackgroundColorSolid();
+      middle = themeColorManager.getBackgroundColorSolid();
+      bottom = themeColorManager.getBackgroundColorSolid();
+    } else {
+      top = themeColorManager.getBackgroundColorTop();
+      middle = themeColorManager.getBackgroundColorMiddle();
+      bottom = themeColorManager.getBackgroundColorBottom();
+    }
+
+    if (progress < 0) {
+      float correctedProgress = Math.abs(progress);
+      top = ColorUtils.blendARGB(top, gray, correctedProgress);
+      middle = ColorUtils.blendARGB(middle, gray, correctedProgress);
+      bottom = ColorUtils.blendARGB(bottom, gray, correctedProgress);
+    }
+
+    boolean backgroundDirty = false;
+    if (backgroundDrawable == null) {
+      backgroundDrawableColors = new int[] {top, middle, bottom};
+      backgroundDrawable = new GradientDrawable(Orientation.TOP_BOTTOM, backgroundDrawableColors);
+      backgroundDirty = true;
+    } else {
+      if (backgroundDrawableColors[0] != top) {
+        backgroundDrawableColors[0] = top;
+        backgroundDirty = true;
+      }
+      if (backgroundDrawableColors[1] != middle) {
+        backgroundDrawableColors[1] = middle;
+        backgroundDirty = true;
+      }
+      if (backgroundDrawableColors[2] != bottom) {
+        backgroundDrawableColors[2] = bottom;
+        backgroundDirty = true;
+      }
+      if (backgroundDirty) {
+        backgroundDrawable.setColors(backgroundDrawableColors);
+      }
+    }
+
+    if (backgroundDirty) {
+      getWindow().setBackgroundDrawable(backgroundDrawable);
+    }
+  }
+
   public boolean isVisible() {
     return isVisible;
   }
diff --git a/java/com/android/incallui/ThemeColorManager.java b/java/com/android/incallui/ThemeColorManager.java
index 967fae9..1d4c287 100644
--- a/java/com/android/incallui/ThemeColorManager.java
+++ b/java/com/android/incallui/ThemeColorManager.java
@@ -17,8 +17,10 @@
 package com.android.incallui;
 
 import android.content.Context;
+import android.graphics.Color;
 import android.support.annotation.ColorInt;
 import android.support.annotation.Nullable;
+import android.support.v4.graphics.ColorUtils;
 import android.telecom.PhoneAccount;
 import android.telecom.PhoneAccountHandle;
 import android.telecom.TelecomManager;
@@ -34,6 +36,10 @@
   private final MaterialColorMapUtils colorMap;
   @ColorInt private int primaryColor;
   @ColorInt private int secondaryColor;
+  @ColorInt private int backgroundColorTop;
+  @ColorInt private int backgroundColorMiddle;
+  @ColorInt private int backgroundColorBottom;
+  @ColorInt private int backgroundColorSolid;
 
   /**
    * If there is no actual call currently in the call list, this will be used as a fallback to
@@ -51,21 +57,38 @@
 
   public void onForegroundCallChanged(Context context, @Nullable DialerCall newForegroundCall) {
     if (newForegroundCall == null) {
-      updateThemeColors(getHighlightColor(context, pendingPhoneAccountHandle), false);
+      updateThemeColors(context, getHighlightColor(context, pendingPhoneAccountHandle), false);
     } else {
       updateThemeColors(
+          context,
           getHighlightColor(context, newForegroundCall.getAccountHandle()),
           newForegroundCall.isSpam());
     }
   }
 
-  private void updateThemeColors(@ColorInt int highlightColor, boolean isSpam) {
+  private void updateThemeColors(Context context, @ColorInt int highlightColor, boolean isSpam) {
     MaterialPalette palette;
     if (isSpam) {
       palette =
           colorMap.calculatePrimaryAndSecondaryColor(R.color.incall_call_spam_background_color);
+      backgroundColorTop = context.getColor(R.color.incall_background_gradient_spam_top);
+      backgroundColorMiddle = context.getColor(R.color.incall_background_gradient_spam_middle);
+      backgroundColorBottom = context.getColor(R.color.incall_background_gradient_spam_bottom);
+      backgroundColorSolid = context.getColor(R.color.incall_background_multiwindow_spam);
     } else {
       palette = colorMap.calculatePrimaryAndSecondaryColor(highlightColor);
+      backgroundColorTop = context.getColor(R.color.incall_background_gradient_top);
+      backgroundColorMiddle = context.getColor(R.color.incall_background_gradient_middle);
+      backgroundColorBottom = context.getColor(R.color.incall_background_gradient_bottom);
+      backgroundColorSolid = context.getColor(R.color.incall_background_multiwindow);
+      if (highlightColor != PhoneAccount.NO_HIGHLIGHT_COLOR) {
+        // The default background gradient has a subtle alpha. We grab that alpha and apply it to
+        // the phone account color.
+        backgroundColorTop = applyAlpha(palette.mPrimaryColor, backgroundColorTop);
+        backgroundColorMiddle = applyAlpha(palette.mPrimaryColor, backgroundColorMiddle);
+        backgroundColorBottom = applyAlpha(palette.mPrimaryColor, backgroundColorBottom);
+        backgroundColorSolid = applyAlpha(palette.mPrimaryColor, backgroundColorSolid);
+      }
     }
 
     primaryColor = palette.mPrimaryColor;
@@ -92,4 +115,29 @@
   public int getSecondaryColor() {
     return secondaryColor;
   }
+
+  @ColorInt
+  public int getBackgroundColorTop() {
+    return backgroundColorTop;
+  }
+
+  @ColorInt
+  public int getBackgroundColorMiddle() {
+    return backgroundColorMiddle;
+  }
+
+  @ColorInt
+  public int getBackgroundColorBottom() {
+    return backgroundColorBottom;
+  }
+
+  @ColorInt
+  public int getBackgroundColorSolid() {
+    return backgroundColorSolid;
+  }
+
+  @ColorInt
+  private static int applyAlpha(@ColorInt int color, @ColorInt int sourceColorWithAlpha) {
+    return ColorUtils.setAlphaComponent(color, Color.alpha(sourceColorWithAlpha));
+  }
 }
diff --git a/java/com/android/incallui/answer/impl/AnswerFragment.java b/java/com/android/incallui/answer/impl/AnswerFragment.java
index f5da3ef..8d8b087 100644
--- a/java/com/android/incallui/answer/impl/AnswerFragment.java
+++ b/java/com/android/incallui/answer/impl/AnswerFragment.java
@@ -880,6 +880,8 @@
     if (primaryCallState != null) {
       contactGridManager.setCallState(primaryCallState);
     }
+
+    restoreBackgroundMaskColor();
   }
 
   @Override
@@ -898,6 +900,12 @@
 
   @Override
   public void onAnswerProgressUpdate(@FloatRange(from = -1f, to = 1f) float answerProgress) {
+    // Don't fade the window background for call waiting or video upgrades. Fading the background
+    // shows the system wallpaper which looks bad because on reject we switch to another call.
+    if (primaryCallState.state() == DialerCallState.INCOMING && !isVideoCall()) {
+      answerScreenDelegate.updateWindowBackgroundColor(answerProgress);
+    }
+
     // Fade and scale contact name and video call text
     float startDelay = .25f;
     // Header progress is zero over positiveAdjustedProgress = [0, startDelay],
@@ -926,6 +934,7 @@
   @Override
   public void resetAnswerProgress() {
     affordanceHolderLayout.reset(true);
+    restoreBackgroundMaskColor();
   }
 
   private void animateEntry(@NonNull View rootView) {
@@ -994,6 +1003,10 @@
     }
   }
 
+  private void restoreBackgroundMaskColor() {
+    answerScreenDelegate.updateWindowBackgroundColor(0);
+  }
+
   private void restoreSwipeHintTexts() {
     if (getAnswerMethod() != null) {
       if (allowAnswerAndRelease()) {
diff --git a/java/com/android/incallui/answer/impl/answermethod/res/values/styles.xml b/java/com/android/incallui/answer/impl/answermethod/res/values/styles.xml
new file mode 100644
index 0000000..fd3ca7c
--- /dev/null
+++ b/java/com/android/incallui/answer/impl/answermethod/res/values/styles.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <style name="Dialer.Incall.TextAppearance.Hint">
+    <item name="android:textSize">14sp</item>
+    <item name="android:textStyle">italic</item>
+  </style>
+</resources>
diff --git a/java/com/android/incallui/answer/impl/res/layout/fragment_avatar.xml b/java/com/android/incallui/answer/impl/res/layout/fragment_avatar.xml
index 246abc5..f8e4894 100644
--- a/java/com/android/incallui/answer/impl/res/layout/fragment_avatar.xml
+++ b/java/com/android/incallui/answer/impl/res/layout/fragment_avatar.xml
@@ -21,4 +21,5 @@
   android:id="@id/contactgrid_avatar"
   android:layout_width="@dimen/answer_avatar_size"
   android:layout_height="@dimen/answer_avatar_size"
-  android:layout_gravity="center"/>
+  android:layout_gravity="center"
+  android:elevation="@dimen/answer_data_elevation"/>
diff --git a/java/com/android/incallui/answer/protocol/AnswerScreenDelegate.java b/java/com/android/incallui/answer/protocol/AnswerScreenDelegate.java
index db2af9b..172d964 100644
--- a/java/com/android/incallui/answer/protocol/AnswerScreenDelegate.java
+++ b/java/com/android/incallui/answer/protocol/AnswerScreenDelegate.java
@@ -16,6 +16,7 @@
 
 package com.android.incallui.answer.protocol;
 
+import android.support.annotation.FloatRange;
 import com.android.incallui.incalluilock.InCallUiLock;
 
 /** Callbacks implemented by the container app for this module. */
@@ -36,6 +37,16 @@
   void onAnswerAndReleaseButtonEnabled();
 
   void onAnswerAndReleaseButtonDisabled();
+  /**
+   * Sets the window background color based on foreground call's theme and the given progress. This
+   * is called from the answer UI to animate the accept and reject action.
+   *
+   * <p>When the user is rejecting we animate the background color to a mostly transparent gray. The
+   * end effect is that the home screen shows through.
+   *
+   * @param progress float from -1 to 1. -1 is fully rejected, 1 is fully accepted, and 0 is neutral
+   */
+  void updateWindowBackgroundColor(@FloatRange(from = -1f, to = 1.0f) float progress);
 
   /** Returns true if any answer/reject action timed out. */
   boolean isActionTimeout();
diff --git a/java/com/android/incallui/commontheme/res/values/styles.xml b/java/com/android/incallui/commontheme/res/values/styles.xml
index f2ec2cc..464eda5 100644
--- a/java/com/android/incallui/commontheme/res/values/styles.xml
+++ b/java/com/android/incallui/commontheme/res/values/styles.xml
@@ -17,12 +17,15 @@
 
 <resources>
 
-  <style name="Dialer.Incall.TextAppearance" parent="Dialer.TextAppearance.Header1">
+  <style name="Dialer.Incall.TextAppearance" parent="android:TextAppearance.Material">
     <item name="android:textColor">?android:attr/textColorSecondary</item>
+    <item name="android:textSize">18sp</item>
   </style>
 
-  <style name="Dialer.Incall.TextAppearance.Large" parent="Dialer.TextAppearance.Header1">
+  <style name="Dialer.Incall.TextAppearance.Large">
+    <item name="android:textColor">?android:attr/textColorPrimary</item>
     <item name="android:textSize">36sp</item>
+    <item name="android:fontFamily">sans-serif-light</item>
   </style>
 
   <style name="Dialer.Incall.TextAppearance.Label">
@@ -30,18 +33,12 @@
     <item name="android:textSize">12sp</item>
   </style>
 
-  <style name="Dialer.Incall.TextAppearance.Hint">
-    <item name="android:textColor">?android:attr/textColorHint</item>
-    <item name="android:textSize">14sp</item>
-    <item name="android:textStyle">italic</item>
-  </style>
-
   <style name="BottomRowIcon">
     <item name="android:layout_height">24dp</item>
     <item name="android:layout_width">24dp</item>
     <item name="android:layout_marginEnd">8dp</item>
     <item name="android:scaleType">fitCenter</item>
-    <item name="colorControlNormal">?colorIcon</item>
+    <item name="colorControlNormal">?android:attr/textColorSecondary</item>
   </style>
 
   <style name="Incall.Button.End" parent="android:Widget.Material.Button">
diff --git a/java/com/android/incallui/contactgrid/res/layout/incall_contactgrid_top_row.xml b/java/com/android/incallui/contactgrid/res/layout/incall_contactgrid_top_row.xml
index bc8759e..2f9ca3e 100644
--- a/java/com/android/incallui/contactgrid/res/layout/incall_contactgrid_top_row.xml
+++ b/java/com/android/incallui/contactgrid/res/layout/incall_contactgrid_top_row.xml
@@ -15,34 +15,33 @@
   ~ limitations under the License
   -->
 <LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:gravity="center"
-    android:orientation="horizontal"
-    tools:showIn="@layout/incall_contact_grid">
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools"
+  android:layout_width="wrap_content"
+  android:layout_height="wrap_content"
+  android:gravity="center"
+  android:orientation="horizontal"
+  tools:showIn="@layout/incall_contact_grid">
   <ImageView
-      android:id="@id/contactgrid_connection_icon"
-      android:layout_width="24dp"
-      android:layout_height="24dp"
-      android:scaleType="fitCenter"
-      android:tint="?colorIcon"
-      tools:src="@android:drawable/sym_def_app_icon"
-      tools:visibility="visible"
-      />
+    android:id="@id/contactgrid_connection_icon"
+    android:layout_width="24dp"
+    android:layout_height="24dp"
+    android:scaleType="fitCenter"
+    tools:src="@android:drawable/sym_def_app_icon"
+    tools:visibility="visible"
+    />
   <Space
       android:id="@id/contactgrid_top_row_space"
-      android:layout_width="@dimen/contactgrid_connection_icon_margin_end"
       android:layout_height="match_parent"
-      />
+      android:layout_width="@dimen/contactgrid_connection_icon_margin_end"
+    />
   <TextView
-      android:id="@id/contactgrid_status_text"
-      android:layout_width="wrap_content"
-      android:layout_height="wrap_content"
-      android:ellipsize="marquee"
-      android:scrollHorizontally="true"
-      android:singleLine="true"
-      android:textAppearance="@style/Dialer.Incall.TextAppearance"
-      tools:text="Captain Holt"/>
+    android:id="@id/contactgrid_status_text"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:singleLine="true"
+    android:ellipsize="marquee"
+    android:scrollHorizontally="true"
+    android:textAppearance="@style/Dialer.Incall.TextAppearance"
+    tools:text="Captain Holt"/>
 </LinearLayout>
diff --git a/java/com/android/incallui/theme/res/drawable/incall_background_gradient.xml b/java/com/android/incallui/theme/res/drawable/incall_background_gradient.xml
new file mode 100644
index 0000000..996f172
--- /dev/null
+++ b/java/com/android/incallui/theme/res/drawable/incall_background_gradient.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2018 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+  <gradient
+    android:angle="270"
+    android:startColor="@color/incall_background_gradient_top"
+    android:centerColor="@color/incall_background_gradient_middle"
+    android:endColor="@color/incall_background_gradient_bottom"/>
+</shape>
diff --git a/java/com/android/incallui/theme/res/values/colors.xml b/java/com/android/incallui/theme/res/values/colors.xml
index 10a19ef..059fe59 100644
--- a/java/com/android/incallui/theme/res/values/colors.xml
+++ b/java/com/android/incallui/theme/res/values/colors.xml
@@ -52,4 +52,16 @@
     <item>#B93221</item>
     <item>#841F10</item>
   </array>
+
+  <color name="incall_background_gradient_top">#E91141BB</color>
+  <color name="incall_background_gradient_middle">#E91141BB</color>
+  <color name="incall_background_gradient_bottom">#CC229FEB</color>
+
+  <color name="incall_background_multiwindow">#E91141BB</color>
+
+  <color name="incall_background_gradient_spam_top">#E5A30B0B</color>
+  <color name="incall_background_gradient_spam_middle">#D6C01111</color>
+  <color name="incall_background_gradient_spam_bottom">#B8E55135</color>
+
+  <color name="incall_background_multiwindow_spam">#E9C22E2E</color>
 </resources>
diff --git a/java/com/android/incallui/theme/res/values/styles.xml b/java/com/android/incallui/theme/res/values/styles.xml
index ac66ffd..3266c7d 100644
--- a/java/com/android/incallui/theme/res/values/styles.xml
+++ b/java/com/android/incallui/theme/res/values/styles.xml
@@ -16,7 +16,11 @@
   -->
 
 <resources>
-  <style name="Theme.InCallScreen" parent="@style/Dialer.ThemeBase.NoActionBar">
+  <!-- Theme for the InCallActivity activity. Should have a transparent background for the
+       circular reveal animation for a new outgoing call to work correctly. We don't just use
+       Theme.Black.NoTitleBar directly, since we want any popups or dialogs from the
+       InCallActivity to have the correct Material style. -->
+  <style name="Theme.InCallScreen.Light" parent="@style/Dialer.ThemeBase.NoActionBar">
     <item name="android:statusBarColor">@android:color/transparent</item>
     <item name="android:navigationBarColor">@android:color/transparent</item>
     <item name="android:windowDrawsSystemBarBackgrounds">true</item>
@@ -25,7 +29,25 @@
     <item name="dialpad_style">@style/InCallDialpad</item>
     <item name="android:windowAnimationStyle">@null</item>
 
-    <item name="android:windowBackground">?android:attr/colorBackground</item>
+    <item name="android:windowBackground">@drawable/incall_background_gradient</item>
+    <item name="android:windowShowWallpaper">true</item>
+  </style>
+
+  <style name="Theme.InCallScreen" parent="@style/Dialer.Dark.ThemeBase.NoActionBar">
+    <item name="android:textColorPrimary">@android:color/white</item>
+    <item name="android:textColorSecondary">#DDFFFFFF</item>
+    <item name="android:statusBarColor">@android:color/transparent</item>
+    <item name="android:navigationBarColor">@android:color/transparent</item>
+    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
+    <item name="android:colorPrimaryDark">@color/dialer_theme_color_dark</item>
+    <item name="colorPrimaryDark">@color/dialer_theme_color_dark</item>
+
+    <item name="dialpad_key_button_touch_tint">?attr/colorPrimary20pct</item>
+    <item name="dialpad_style">@style/InCallDialpad</item>
+    <item name="android:windowAnimationStyle">@null</item>
+
+    <item name="android:windowBackground">@drawable/incall_background_gradient</item>
+    <item name="android:windowShowWallpaper">true</item>
     <item name="android:windowLayoutInDisplayCutoutMode">never</item>
   </style>