diff --git a/res/values/colors.xml b/res/values/colors.xml
index cba8483..58687c9 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -83,14 +83,14 @@
     <!-- Default avatar colors -->
     <color name="pink_500">#ffe91e63</color>
     <color name="indigo_500">#ff3f51b5</color>
-    <color name="blue_500">@*android:color/material_blue_500</color>
-    <color name="teal_500">@*android:color/material_teal_500</color>
-    <color name="green_500">@*android:color/material_green_500</color>
+    <color name="blue_500">#ff4285f4</color>
+    <color name="teal_500">#ff00bcd4</color>
+    <color name="green_500">#ff0f9d58</color>
     <color name="light_green_500">#ff8bc34a</color>
-    <color name="orange_500">@*android:color/material_orange_500</color>
-    <color name="deep_orange_500">@*android:color/material_deep_orange_500</color>
+    <color name="orange_500">#ffff9800</color>
+    <color name="deep_orange_500">#ffff5722</color>
     <!-- Avatar color used for guest -->
-    <color name="grey_500">@*android:color/material_grey_500</color>
+    <color name="grey_500">#ff9e9e9e</color>
 
     <color name="wifi_divider">#ffe0e0e0</color>