diff --git a/painting/shape.js b/painting/shape.js
index d1bc20f..4f9a9a1 100644
--- a/painting/shape.js
+++ b/painting/shape.js
@@ -32,7 +32,7 @@ class Shape {
         maxY = h;
     }
     static setColoring(bool) {
-        coloring = bool !== true;
+        coloring = bool !== false;
     }
 }