Set single page text color to textColorPrimary

Elsewhere in the drawers, we explicitly set the textColor to
?android:attr/textColorPrimary. However, in the single page nav drawer,
we didn't.

Test: espresso tests still pass and looks good in the test app
Bug: 68304629
Change-Id: I91c98d6e4682de2436716c0de7a98f1ab2783aa9
diff --git a/wear/res/values/styles.xml b/wear/res/values/styles.xml
index 44ab0b0..5af7e6f 100644
--- a/wear/res/values/styles.xml
+++ b/wear/res/values/styles.xml
@@ -29,6 +29,7 @@
         <item name="android:textSize">@dimen/ws_nav_drawer_text_size</item>
         <item name="android:gravity">center</item>
         <item name="android:maxLines">2</item>
+        <item name="android:textColor">?android:attr/textColorPrimary</item>
         <item name="layout_marginTopPercent">@fraction/ws_nav_drawer_text_margin</item>
         <item name="layout_marginStartPercent">@fraction/ws_nav_drawer_text_margin</item>
         <item name="layout_marginEndPercent">@fraction/ws_nav_drawer_text_margin</item>