LatinIME: Update dark Material You colors to be closer to gboard

Pretty much everything matches now, except that:
- keyboard_key_functional_pressed_color_you and keyboard_key_action_pressed_color_you
  should actually be system_secondary_container_dark mixed with
  something I don't know.
- The highlight on the floating alternate character pop-up should be
  system_control_activated_light.
- The rest of the keyboard should be dimmed while the floating
  alternate character pop-up is visible.
- The text on the emoji/locale key should be the same as normal keys.

Most of the colors are more subtle than before.

Change-Id: I543fe2de623429f7dc4651f87cef1a59fb6f1a69

Author: pgaskin

java/res/values-night/themes-you-colors.xml

@@ -4,24 +4,24 @@
      SPDX-License-Identifier: Apache-2.0
 -->
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
-    <color name="keyboard_background_you">@android:color/system_neutral1_900</color>
+    <color name="keyboard_background_you">@android:color/system_surface_container_dark</color>
     <!-- Keys -->
-    <color name="keyboard_key_normal_color_you">@android:color/system_neutral1_800</color>
-    <color name="keyboard_key_pressed_color_you">@android:color/system_neutral1_900</color>
-    <color name="keyboard_key_text_color_you">@android:color/system_neutral1_50</color>
-    <color name="keyboard_key_functional_normal_color_you">@android:color/system_neutral1_700</color>
-    <color name="keyboard_key_functional_pressed_color_you">@android:color/system_neutral2_300</color>
-    <color name="keyboard_key_functional_text_color_you">@android:color/system_neutral1_50</color>
-    <color name="keyboard_key_action_normal_color_you">@android:color/system_accent1_400</color>
-    <color name="keyboard_key_action_pressed_color_you">@android:color/system_accent1_600</color>
-    <color name="shift_normal_color_you">@android:color/system_neutral1_50</color>
-    <color name="shift_locked_color_you">@android:color/system_neutral1_50</color>
-    <color name="icon_color_you">@android:color/system_neutral1_50</color>
-    <color name="key_hint_letter_color_you">@android:color/system_neutral1_400</color>
+    <color name="keyboard_key_normal_color_you">@android:color/system_surface_container_highest_dark</color>
+    <color name="keyboard_key_pressed_color_you">@android:color/system_surface_container_dark</color>
+    <color name="keyboard_key_text_color_you">@android:color/system_on_surface_dark</color>
+    <color name="keyboard_key_functional_normal_color_you">@android:color/system_secondary_container_dark</color>
+    <color name="keyboard_key_functional_pressed_color_you">@android:color/system_on_secondary_dark</color>
+    <color name="keyboard_key_functional_text_color_you">@android:color/system_on_secondary_container_dark</color>
+    <color name="keyboard_key_action_normal_color_you">@android:color/system_secondary_container_dark</color>
+    <color name="keyboard_key_action_pressed_color_you">@android:color/system_on_secondary_dark</color>
+    <color name="shift_normal_color_you">@android:color/system_on_secondary_container_dark</color>
+    <color name="shift_locked_color_you">@android:color/system_on_secondary_container_dark</color>
+    <color name="icon_color_you">@android:color/system_on_secondary_container_dark</color>
+    <color name="key_hint_letter_color_you">@android:color/system_on_surface_variant_dark</color>
     <!-- Suggestion bar -->
-    <color name="typed_word_color_you">@android:color/system_neutral1_50</color>
-    <color name="auto_correct_color_you">@android:color/system_neutral1_50</color>
-    <color name="suggested_word_color_you">@android:color/system_neutral1_50</color>
+    <color name="typed_word_color_you">@android:color/system_on_background_dark</color>
+    <color name="auto_correct_color_you">@android:color/system_on_background_dark</color>
+    <color name="suggested_word_color_you">@android:color/system_on_background_dark</color>
     <!-- Gesture input -->
     <color name="gesture_trail_color_you">@android:color/system_accent1_300</color>
     <color name="gesture_floating_preview_text_color_you">@android:color/system_neutral1_50</color>