diff --git a/sim/state/color.ts b/sim/state/color.ts
index b82d607f..a2f0bee4 100644
--- a/sim/state/color.ts
+++ b/sim/state/color.ts
@@ -66,6 +66,10 @@ namespace pxsim {
                 this.color = 0;
                 this.colors = [128, 128, 128];
                 this.modeReturnArr = true;
+            } else if (this.mode == ColorSensorMode.Colors) {
+                this.color = 0; // None defl color
+                this.colors = [0, 0, 0];
+                this.modeReturnArr = false;
             } else { // Reflection or ambiend light
                 this.color = 50;
                 this.colors = [0, 0, 0];