Update assets and themes to leverage DayNight system.

app/src/main/res/color/signal_button_primary_text_selector.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/signal_button_primary_text_disabled" android:state_enabled="false" />
+    <item android:color="@color/signal_button_primary_text" />
+</selector>

app/src/main/res/color/signal_button_secondary_text_selector.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/signal_button_secondary_text_disabled" android:state_enabled="false" />
+    <item android:color="@color/signal_button_secondary_text" />
+</selector>

app/src/main/res/color/text_color_accent_enabled_selector.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:color="?title_text_color_disabled" android:state_enabled="false" />
+    <item android:color="@color/signal_text_primary_disabled" android:state_enabled="false" />
     <item android:color="?colorAccent" />
 </selector>

app/src/main/res/color/text_color_primary_enabled_selector.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:color="?title_text_color_disabled" android:state_enabled="false" />
-    <item android:color="?title_text_color_primary" />
+    <item android:color="@color/signal_text_primary_disabled" android:state_enabled="false" />
+    <item android:color="@color/signal_text_primary" />
 </selector>

app/src/main/res/color/text_color_secondary_enabled_selector.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:color="?title_text_color_disabled" android:state_enabled="false" />
-    <item android:color="?title_text_color_secondary" />
+    <item android:color="@color/signal_text_primary_disabled" android:state_enabled="false" />
+    <item android:color="@color/signal_text_secondary" />
 </selector>

app/src/main/res/color/ultramarine_text_button.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:color="?attr/colorAccent" android:state_enabled="true" />
-    <item android:color="?attr/title_text_color_secondary" />
+    <item android:color="@color/signal_text_secondary" />
 </selector>

app/src/main/res/drawable-night/ic_add_members_circle.xml

@@ -7,7 +7,7 @@
     </item>
     <item
         android:bottom="12dp"
-        android:drawable="@drawable/ic_add_members_20_dark"
+        android:drawable="@drawable/ic_add_members_20"
         android:left="12dp"
         android:right="12dp"
         android:top="12dp" />

app/src/main/res/drawable-night/ic_appearance_24.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
   <path
-      android:fillColor="?icon_tint"
+      android:fillColor="@color/signal_icon_tint_primary"
       android:pathData="M18,12a6,6 0,1 1,-6 -6A6,6 0,0 1,18 12ZM4.5,11.25L1,11.25v1.5L4.5,12.75ZM23,11.25L19.5,11.25v1.5L23,12.75ZM12.75,19.5h-1.5L11.25,23h1.5ZM12.75,1h-1.5L11.25,4.5h1.5ZM7.227,6.167 L4.752,3.691 3.691,4.752 6.166,7.227ZM20.309,19.248l-2.475,-2.475 -1.061,1.061 2.475,2.475ZM7.227,17.834 L6.166,16.773 3.691,19.248l1.061,1.061ZM20.309,4.752 L19.248,3.691 16.773,6.167l1.061,1.06Z"/>
 </vector>

app/src/main/res/drawable-night/ic_archive_24dp.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
   <path
-      android:fillColor="?icon_tint"
+      android:fillColor="@color/signal_icon_tint_primary"
       android:pathData="M3,8.5v11A1.5,1.5 0,0 0,4.5 21h15A1.5,1.5 0,0 0,21 19.5L21,8.5ZM14,13L10,13a1,1 0,0 1,0 -2h4a1,1 0,0 1,0 2ZM21.75,7L2.25,7a0.75,0.75 0,0 1,-0.75 -0.75L1.5,3.75A0.75,0.75 0,0 1,2.25 3h19.5a0.75,0.75 0,0 1,0.75 0.75v2.5A0.75,0.75 0,0 1,21.75 7Z"/>
 </vector>

app/src/main/res/drawable-night/ic_bell_24.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
   <path
-      android:fillColor="?icon_tint"
+      android:fillColor="@color/signal_icon_tint_primary"
       android:pathData="M14.45,20.5a2.5,2.5 0,0 1,-4.9 0ZM21.264,16.216a4.033,4.033 0,0 1,-1.975 -2.646L17.862,6.727a6,6 0,0 0,-11.724 0L4.711,13.57A4.036,4.036 0,0 1,2.768 16.2,1.5 1.5,0 0,0 3.5,19h17a1.5,1.5 0,0 0,0.764 -2.784Z"/>
 </vector>

app/src/main/res/drawable-night/ic_camera_24.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
   <path
-      android:fillColor="?icon_tint"
+      android:fillColor="@color/signal_icon_tint_primary"
       android:pathData="M18.5,4L17,4L15.45,2.063A1.5,1.5 0,0 0,14.279 1.5L9.721,1.5a1.5,1.5 0,0 0,-1.171 0.563L7,4L5.5,4A4.5,4.5 0,0 0,1 8.5v9A4.5,4.5 0,0 0,5.5 22h13A4.5,4.5 0,0 0,23 17.5v-9A4.5,4.5 0,0 0,18.5 4ZM12,19a6.5,6.5 0,1 1,6.5 -6.5A6.5,6.5 0,0 1,12 19ZM17,12.5a5,5 0,1 1,-5 -5A5.006,5.006 0,0 1,17 12.5Z"/>
 </vector>