--- a/ImageEditor.st	Tue Apr 02 11:32:49 2013 +0200
+++ b/ImageEditor.st	Tue Apr 02 12:06:26 2013 +0200
@@ -5491,7 +5491,7 @@
     oldColor := cMap at:selectedColorIndex.
     imageEditView makeUndo.
 
-    modifiedColormap := cMap asArray copy.
+    modifiedColormap := cMap asNewArray.
 
     newColor := aBlock value:oldColor.
     modifiedColormap at:selectedColorIndex put:newColor.