Give names to colors and clean them up

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogFragment.java

@@ -335,7 +335,7 @@ public class BlogFragment extends BaseFragment
 			View.OnClickListener onClick = v -> list.smoothScrollToPosition(0);
 			snackbar.setActionTextColor(ContextCompat
 					.getColor(getContext(),
-							R.color.briar_button_positive));
+							R.color.briar_button_text_positive));
 			snackbar.setAction(R.string.blogs_blog_post_scroll_to, onClick);
 		}
 		snackbar.show();

briar-android/src/main/java/org/briarproject/briar/android/blog/FeedFragment.java

@@ -250,7 +250,7 @@ public class FeedFragment extends BaseFragment implements
 			OnClickListener onClick = v -> list.smoothScrollToPosition(0);
 			s.setActionTextColor(ContextCompat
 					.getColor(getContext(),
-							R.color.briar_button_positive));
+							R.color.briar_button_text_positive));
 			s.setAction(R.string.blogs_blog_post_scroll_to, onClick);
 		}
 		s.show();

briar-android/src/main/java/org/briarproject/briar/android/forum/ForumListFragment.java

@@ -103,7 +103,7 @@ public class ForumListFragment extends BaseEventFragment implements
 		snackbar.getView().setBackgroundResource(R.color.briar_primary);
 		snackbar.setAction(R.string.show, this);
 		snackbar.setActionTextColor(ContextCompat
-				.getColor(getContext(), R.color.briar_button_positive));
+				.getColor(getContext(), R.color.briar_button_text_positive));
 
 		return contentView;
 	}

briar-android/src/main/java/org/briarproject/briar/android/privategroup/list/GroupListFragment.java

@@ -77,7 +77,7 @@ public class GroupListFragment extends BaseFragment implements
 		snackbar.getView().setBackgroundResource(R.color.briar_primary);
 		snackbar.setAction(R.string.show, this);
 		snackbar.setActionTextColor(ContextCompat
-				.getColor(getContext(), R.color.briar_button_positive));
+				.getColor(getContext(), R.color.briar_button_text_positive));
 
 		return v;
 	}

briar-android/src/main/res/layout/power_view.xml

@@ -52,7 +52,7 @@
 		android:layout_margin="8dp"
 		android:contentDescription="@string/help"
 		android:src="@drawable/ic_help_outline_white"
-		android:tint="@color/briar_button_positive"
+		android:tint="@color/briar_button_text_positive"
 		app:layout_constraintBottom_toBottomOf="@+id/button"
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintTop_toTopOf="@+id/button"/>

briar-android/src/main/res/layout/text_avatar_view.xml

@@ -10,7 +10,7 @@
 		android:layout_width="@dimen/avatar_forum_size"
 		android:layout_height="@dimen/avatar_forum_size"
 		android:layout_gravity="bottom|left"
-		android:src="@color/briar_button_positive"/>
+		android:src="@color/briar_button_text_positive"/>
 
 	<android.support.v7.widget.AppCompatTextView
 		android:id="@+id/textAvatarView"

briar-android/src/main/res/values-night/color.xml

@@ -4,26 +4,26 @@
 	<color name="briar_accent">@color/briar_green</color>
 
 	<color name="preference_category">@color/briar_accent</color>
-	<color name="preference_category_background">#080C10</color>
+	<color name="preference_category_background">@color/briar_black_almost</color>
 
-	<color name="color_primary">#ffffff</color>
+	<color name="color_primary">@color/briar_white</color>
 
 	<color name="msg_in">@color/briar_blue</color>
-	<color name="msg_out">#3C80A9</color>
+	<color name="msg_out">@color/briar_blue_elio_light</color>
 	<color name="notice_in">@color/briar_blue_dark</color>
-	<color name="notice_out">#236087</color>
+	<color name="notice_out">@color/briar_blue_elio</color>
 
 	<color name="window_background">@color/briar_blue_very_dark</color>
 	<color name="card_background">@color/briar_blue_dark</color>
 	<color name="item_background_highlight">@color/briar_blue</color>
 
-	<color name="briar_button_color">@color/briar_blue_light</color>
-	<color name="briar_button_neutral">@color/briar_link</color>
+	<color name="briar_button_background_color">@color/briar_blue_medium</color>
+	<color name="briar_button_text_neutral">@color/briar_blue_light</color>
 	<color name="briar_button_text_disabled">#23cccccc</color>
 
-	<color name="thread_indicator">#2D3E50</color>
+	<color name="thread_indicator">@color/briar_blue</color>
 	<color name="thread_item_background">@color/window_background</color>
-	<color name="thread_item_highlight">#000000</color>
+	<color name="thread_item_highlight">@color/briar_black</color>
 
-	<color name="divider">#000000</color>
+	<color name="divider">@color/briar_black</color>
 </resources>
\ No newline at end of file

briar-android/src/main/res/values/color.xml

@@ -3,48 +3,60 @@
 	<color name="briar_blue">#2D3E50</color>
 	<color name="briar_blue_dark">#222E3C</color>
 	<color name="briar_blue_very_dark">#0F1720</color>
-	<color name="briar_blue_light">#4F6C8C</color>
+	<color name="briar_blue_medium">#4F6C8C</color>
+	<color name="briar_blue_elio">#236087</color>
+	<color name="briar_blue_elio_light">#3C80A9</color>
+	<color name="briar_blue_light">#2A93C6</color>
+	<color name="briar_blue_grey">#EBEFF2</color>
 	<color name="briar_green">#5C940D</color>
 	<color name="briar_green_light">#95D220</color>
-	<color name="briar_link">#2A93C6</color>
+	<color name="briar_red">#ff0000</color>
+	<color name="briar_white">#FFFFFF</color>
+	<color name="briar_black">#000000</color>
+	<color name="briar_black_almost">#080C10</color>
 
-	<color name="window_background">#E3EBEF</color>
-	<color name="card_background">@color/cardview_light_background</color>
-	<color name="item_background_highlight">#DCDCDC</color>
-	<color name="action_bar_text">#FFFFFF</color>
-	<color name="private_message_date_inverse">#e0e0e0</color>
-	<color name="forum_avatar_shadow">#99000000</color>
+	<color name="m_grey_300">#e0e0e0</color>
+	<color name="m_grey_500">#9e9e9e</color>
+	<color name="m_blue_grey_50">#eceff1</color>
 
 	<color name="briar_primary">@color/briar_blue</color>
 	<color name="briar_primary_dark">@color/briar_blue_very_dark</color>
 	<color name="briar_accent">@color/briar_blue</color>
 
+	<color name="window_background">#E3EBEF</color>
+	<color name="card_background">@color/cardview_light_background</color>
+	<color name="item_background_highlight">#DCDCDC</color>
+	<color name="briar_warning_background">@color/briar_red</color>
+	<color name="action_bar_text">@color/briar_white</color>
+	<color name="private_message_date_inverse">@color/m_grey_300</color>
+	<color name="forum_avatar_shadow">#99000000</color>
+
 	<color name="color_primary">#dd000000</color>
 
-	<color name="msg_in">#FFFFFF</color>
-	<color name="msg_out">#3C7FA9</color>
-	<color name="notice_in">#EBEFF2</color>
-	<color name="notice_out">#236087</color>
+	<color name="msg_in">@color/briar_white</color>
+	<color name="msg_out">@color/briar_blue_elio_light</color>
+	<color name="notice_in">@color/briar_blue_grey</color>
+	<color name="notice_out">@color/briar_blue_elio</color>
 
 	<!-- text colors -->
-	<color name="briar_text_link">@color/briar_link</color>
+	<color name="briar_text_link">@color/briar_blue_light</color>
 	<color name="briar_text_primary">#df000000</color>
-	<color name="briar_text_primary_inverse">#ffffff</color>
+	<color name="briar_text_primary_inverse">@color/briar_white</color>
 	<color name="briar_text_secondary_inverse">#b4ffffff</color>
 	<color name="briar_text_tertiary_inverse">#80ffffff</color>
-	<color name="preference_category">@color/briar_blue_light</color>
+
+	<color name="preference_category">@color/briar_blue_medium</color>
 	<color name="preference_category_background">@color/window_background</color>
 
-	<color name="briar_button_color">@color/briar_accent</color>
-	<color name="briar_button_positive">@color/briar_link</color>
-	<color name="briar_button_neutral">@color/briar_blue_light</color>
-	<color name="briar_button_negative">#ff0000</color>
+	<color name="briar_button_background_color">@color/briar_accent</color>
+	<color name="briar_button_text_positive">@color/briar_blue_light</color>
+	<color name="briar_button_text_neutral">@color/briar_blue_medium</color>
+	<color name="briar_button_text_negative">@color/briar_red</color>
 	<color name="briar_button_text_disabled">#28000000</color>
-	<color name="briar_warning_background">#ff0000</color>
 
-	<color name="thread_indicator">#9e9e9e</color>
-	<color name="thread_item_background">#eceff1</color>
-	<color name="thread_item_highlight">#ffffff</color>
+	<color name="thread_indicator">@color/m_grey_500</color>
+	<color name="thread_item_background">@color/m_blue_grey_50</color>
+	<color name="thread_item_highlight">@color/briar_white</color>
 
 	<color name="divider">#c1c1c1</color>
 </resources>
\ No newline at end of file

briar-android/src/main/res/values/styles.xml

@@ -30,7 +30,7 @@
 
 	<style name="ButtonTheme" parent="Theme.AppCompat.DayNight">
 		<!-- A strange hack needed only to override button color on all API levels -->
-		<item name="colorAccent">@color/briar_button_color</item>
+		<item name="colorAccent">@color/briar_button_background_color</item>
 	</style>
 
 	<style name="BriarButton" parent="Widget.AppCompat.Button.Colored">
@@ -41,17 +41,17 @@
 	</style>
 
 	<style name="BriarButtonFlat.Negative" parent="Widget.AppCompat.Button.Borderless">
-		<item name="android:textColor">@color/briar_button_negative</item>
+		<item name="android:textColor">@color/briar_button_text_negative</item>
 		<item name="android:textSize">@dimen/text_size_medium</item>
 	</style>
 
 	<style name="BriarButtonFlat.Positive" parent="Widget.AppCompat.Button.Borderless">
-		<item name="android:textColor">@color/briar_button_positive</item>
+		<item name="android:textColor">@color/briar_button_text_positive</item>
 		<item name="android:textSize">@dimen/text_size_medium</item>
 	</style>
 
 	<style name="BriarButtonFlat.Neutral" parent="Widget.AppCompat.Button.Borderless">
-		<item name="android:textColor">@color/briar_button_neutral</item>
+		<item name="android:textColor">@color/briar_button_text_neutral</item>
 		<item name="android:textSize">@dimen/text_size_medium</item>
 	</style>