fixed zebra coloring for imported scripts

HISTORY.md

@@ -8,6 +8,7 @@
 ### 2020-12-14
 * new dev version
 * new Manual for v6.4, thanks, Brian!
+* fixed zebra coloring for imported scripts
 
 ## 6.4.0
 * **New Features:**

src/gui.js

@@ -4991,6 +4991,7 @@ IDE_Morph.prototype.rawOpenScriptString = function (str) {
     }
     script.setPosition(this.world().hand.position());
     scripts.add(script);
+    script.fixBlockColor(null, true); // force zebra coloring
     scripts.adjustBounds();
     scripts.lastDroppedBlock = script;
     scripts.recordDrop(