diff --git a/HISTORY.md b/HISTORY.md
index 07a001d1..71cc77d9 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -51,6 +51,9 @@
     * German
     * Chinese, thanks, Simon!
 
+### 2021-11-10
+* objects, store: new "penColorModel" setting, can e 'hsv' or 'hsl'
+
 ### 2021-11-09
 * objects, store: refactored block-migration mechanism
 * gui: changed display of project name in the IDE to PROJECT (SCENE)
diff --git a/snap.html b/snap.html
index 076ff6e8..c99d778f 100755
--- a/snap.html
+++ b/snap.html
@@ -18,7 +18,7 @@
         <script src="src/widgets.js?version=2021-17-09"></script>
         <script src="src/blocks.js?version=2021-11-09"></script>
         <script src="src/threads.js?version=2021-11-08"></script>
-        <script src="src/objects.js?version=2021-11-09"></script>
+        <script src="src/objects.js?version=2021-11-10"></script>
         <script src="src/scenes.js?version=2021-10-12"></script>
         <script src="src/gui.js?version=2021-11-09"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
@@ -30,7 +30,7 @@
         <script src="src/maps.js?version=2021-06-15"></script>
         <script src="src/extensions.js?version=2021-11-08"></script>
         <script src="src/xml.js?version=2021-07-05"></script>
-        <script src="src/store.js?version=2021-11-09"></script>
+        <script src="src/store.js?version=2021-11-10"></script>
         <script src="src/locale.js?version=2021-10-28"></script>
         <script src="src/cloud.js?version=2021-02-04"></script>
         <script src="src/api.js?version=2021-07-05"></script>
diff --git a/src/objects.js b/src/objects.js
index a96f588b..7ea3fbcc 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -87,7 +87,7 @@ BlockVisibilityDialogMorph*/
 
 /*jshint esversion: 6*/
 
-modules.objects = '2021-November-09';
+modules.objects = '2021-November-10';
 
 var SpriteMorph;
 var StageMorph;
@@ -185,6 +185,7 @@ SpriteMorph.prototype.enableNesting = true;
 SpriteMorph.prototype.enableFirstClass = true;
 SpriteMorph.prototype.showingExtensions = false;
 SpriteMorph.prototype.useFlatLineEnds = false;
+SpriteMorph.prototype.penColorModel = 'hsl'; // or 'hsv'
 SpriteMorph.prototype.highlightColor = new Color(250, 200, 130);
 SpriteMorph.prototype.highlightBorder = 8;
 
@@ -1904,7 +1905,7 @@ SpriteMorph.prototype.init = function (globals) {
 
     this.isCachingImage = true;
     this.isFreeForm = true;
-    this.cachedColorDimensions = this.color.hsl();
+    this.cachedColorDimensions = this.color[this.penColorModel]();
     this.isDraggable = true;
     this.isDown = false;
     this.heading = 90;
@@ -1935,7 +1936,7 @@ SpriteMorph.prototype.fullCopy = function (forClone) {
     c.primitivesCache = {};
     c.paletteCache = {};
     c.imageData = {};
-    c.cachedColorDimensions = c.color.hsl();
+    c.cachedColorDimensions = c.color[this.penColorModel]();
     arr = [];
     this.inheritedAttributes.forEach(att => arr.push(att));
     c.inheritedAttributes = arr;
@@ -4480,7 +4481,7 @@ SpriteMorph.prototype.setColor = function (aColor) {
             this.rerender();
             this.silentGotoXY(x, y);
         }
-        this.cachedColorDimensions = this.color.hsl();
+        this.cachedColorDimensions = this.color[this.penColorModel]();
     }
 };
 
@@ -7861,7 +7862,7 @@ StageMorph.prototype.init = function (globals) {
 
     this.setExtent(this.dimensions);
     this.isCachingImage = true;
-    this.cachedColorDimensions = this.color.hsl();
+    this.cachedColorDimensions = this.color[this.penColorModel]();
     this.acceptsDrops = false;
     this.setColor(new Color(255, 255, 255));
     this.fps = this.frameRate;
@@ -9307,7 +9308,9 @@ StageMorph.prototype.setColor = function (aColor) {
     if (!this.color.eq(aColor, true)) { // observeAlpha
         this.color = aColor.copy();
         this.rerender();
-        this.cachedColorDimensions = this.color.hsl();
+        this.cachedColorDimensions = this.color[
+            SpriteMorph.prototype.penColorModel
+        ]();
     }
 };
 
diff --git a/src/store.js b/src/store.js
index e2ebbc57..6a66d3af 100644
--- a/src/store.js
+++ b/src/store.js
@@ -63,7 +63,7 @@ Project*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.store = '2021-November-09';
+modules.store = '2021-November-10';
 
 // XML_Serializer ///////////////////////////////////////////////////////
 /*
@@ -408,7 +408,9 @@ SnapSerializer.prototype.loadScene = function (xmlNode, remixID) {
     }
     if (model.stage.attributes.color) {
         scene.stage.color = this.loadColor(model.stage.attributes.color);
-        scene.stage.cachedColorDimensions = scene.stage.color.hsl();
+        scene.stage.cachedColorDimensions = scene.stage.color[
+            SpriteMorph.prototype.penColorModel
+        ]();
     }
     if (model.stage.attributes.scheduled === 'true') {
         scene.stage.fps = 30;
@@ -714,7 +716,7 @@ SnapSerializer.prototype.loadSprites = function (xmlString, ide) {
         }
         if (model.attributes.color) {
             sprite.color = this.loadColor(model.attributes.color);
-            sprite.cachedColorDimensions = sprite.color.hsl();
+            sprite.cachedColorDimensions = sprite.color[sprite.penColorModel]();
         }
         if (model.attributes.pen) {
             sprite.penPoint = model.attributes.pen;
@@ -1453,7 +1455,7 @@ SnapSerializer.prototype.loadValue = function (model, object) {
         }
         if (model.attributes.color) {
             v.color = this.loadColor(model.attributes.color);
-            v.cachedColorDimensions = v.color.hsl();
+            v.cachedColorDimensions = v.color[v.penColorModel]();
         }
         if (model.attributes.pen) {
             v.penPoint = model.attributes.pen;