fix: Increase contrast between selected messages and window background. Fixes #1110 (Plan B) (#1116)

app/src/main/res/values/themes.xml

@@ -366,7 +366,7 @@
         <item name="conversationMenuSearchBackgroundColor">@color/classic_dark_0</item>
 
         <!-- Conversation -->
-        <item name="message_received_background_color">@color/classic_dark_2</item>
+        <item name="message_received_background_color">@color/classic_dark_3</item>
         <item name="message_received_text_color">@color/classic_dark_6</item>
         <item name="message_sent_background_color">?colorAccent</item>
         <item name="message_sent_text_color">@color/classic_dark_0</item>
@@ -386,7 +386,7 @@
         <item name="scroll_to_bottom_button_background">@color/classic_dark_1</item>
         <item name="scroll_to_bottom_button_border">@color/classic_dark_3</item>
         <item name="conversation_unread_count_indicator_background">@color/classic_dark_4</item>
-        <item name="message_selected">@color/classic_dark_1</item>
+        <item name="message_selected">@color/classic_dark_2</item>
     </style>
 
     <style name="Classic.Light">
@@ -451,7 +451,7 @@
         <item name="conversationMenuSearchBackgroundColor">@color/classic_light_6</item>
 
         <!-- Conversation -->
-        <item name="message_received_background_color">@color/classic_light_4</item>
+        <item name="message_received_background_color">@color/classic_light_3</item>
         <item name="message_received_text_color">@color/classic_light_0</item>
         <item name="message_sent_background_color">?colorAccent</item>
         <item name="message_sent_text_color">@color/classic_light_0</item>
@@ -471,7 +471,7 @@
         <item name="scroll_to_bottom_button_background">@color/classic_light_4</item>
         <item name="scroll_to_bottom_button_border">@color/classic_light_2</item>
         <item name="conversation_unread_count_indicator_background">@color/classic_dark_4</item>
-        <item name="message_selected">@color/classic_light_5</item>
+        <item name="message_selected">@color/classic_light_4</item>
 
     </style>
 
@@ -640,7 +640,7 @@
         <item name="conversation_pinned_background_color">?colorCellBackground</item>
         <item name="conversation_unread_background_color">@color/ocean_light_6</item>
         <item name="conversation_pinned_icon_color">?android:textColorSecondary</item>
-        <item name="message_selected">@color/ocean_light_6</item>
+        <item name="message_selected">@color/ocean_light_5</item>
     </style>
 
 </resources>