diff --git a/services/surfaceflinger/layerproto/layers.proto b/services/surfaceflinger/layerproto/layers.proto
index 9ad9b91..23df1bb 100644
--- a/services/surfaceflinger/layerproto/layers.proto
+++ b/services/surfaceflinger/layerproto/layers.proto
@@ -101,6 +101,7 @@
   // length of the shadow to draw around the layer, it may be set on the
   // layer or set by a parent layer.
   float shadow_radius = 49;
+  ColorTransformProto color_transform = 50;
 }
 
 message PositionProto {
@@ -181,3 +182,8 @@
     bool replace_touchable_region_with_crop = 14;
     RectProto touchable_region_crop = 15;
 }
+
+message ColorTransformProto {
+  // This will be a 4x4 matrix of float values
+  repeated float val = 1;
+}
\ No newline at end of file