diff --git a/static/extended_palette.txt b/static/extended_palette.txt
index 2fa7e13..3c73b2a 100644
--- a/static/extended_palette.txt
+++ b/static/extended_palette.txt
@@ -3,3 +3,4 @@ unifiedbricks:clayblock
 unifiedbricks:brickblock_multicolor_dark
 unifiedbricks:brickblock_multicolor_medium
 unifiedbricks:brickblock_multicolor_light
+prefab:concrete_colored