update index and version

index.html

@@ -46,7 +46,7 @@
     <script type="text/javascript" src="stitchcode/symbols.js?version=2021-12-14"></script>
     <script type="text/javascript" src="stitchcode/blocks.js?version=2021-12-14"></script>
     <script type="text/javascript" src="stitchcode/threads.js?version=2022-12-05"></script>
-    <script type="text/javascript" src="stitchcode/objects.js?version=2023-02-14"></script>
+    <script type="text/javascript" src="stitchcode/objects.js?version=2023-02-20"></script>
     <script type="text/javascript" src="stitchcode/turtlecloud.js?version=2022-10-05"></script>
     <script type="text/javascript" src="stitchcode/gui.js?version=2022-10-31"></script>
     <script type="text/javascript" src="stitchcode/store.js?version=2022-06-14"></script>

stitchcode/gui.js

@@ -1,4 +1,4 @@
-VERSION="2.7.13"
+VERSION="2.7.14"
 
 // get debug mode
 url = new URL(window.location.href);

stitchcode/objects.js

@@ -1254,7 +1254,7 @@ SpriteMorph.prototype.setColor = function (aColor) {
 
 
 SpriteMorph.prototype.setColorRGB = function (r,g,b) {
-  if (!isFinite(a) || !isFinite(b) || !isFinite(c)) {
+  if (!isFinite(r) || !isFinite(b) || !isFinite(g)) {
     throw new Error('value must not by Infinity');
   }
 	var a = this.color.a;