Index: Sketch/Modules/skimage.c
===================================================================
--- Sketch/Modules/skimage.c	(Revision 533)
+++ Sketch/Modules/skimage.c	(Arbeitskopie)
@@ -1056,7 +1056,9 @@
 	dest = (unsigned char*)(image->image->image32[y]);
 	for (x = 0; x <= width; x++, dest += 4)
 	{
+	    //v-value
 	    color[xidx] = (double)x / width;
+	    //s-value
 	    color[yidx] = (double)(height - y) / height;
 	    hsv_to_rgb(color[0], color[1], color[2], dest);
 	}
@@ -1094,7 +1096,12 @@
 	dest = (unsigned char*)(image->image->image32[y]);
 	for (x = 0; x <= width; x++, dest += 4)
 	{
+	    //h-value
 	    hsv[idx] = (double)(height - y) / height;
+	    //s- and v-value are set to 1 as we want to have bright power-
+	    //full colors.
+      hsv[1] = 1.0;
+	    hsv[2] = 1.0;
 	    hsv_to_rgb(hsv[0], hsv[1], hsv[2], dest);
 	}
     }
Index: Sketch/UI/colordlg.py
===================================================================
--- Sketch/UI/colordlg.py	(Revision 533)
+++ Sketch/UI/colordlg.py	(Arbeitskopie)
@@ -302,6 +302,7 @@
 	elif y >= 1.0:	y = 1.0
 
 	color = list(self.color)
+	#h-value
 	color[self.comp] = y
 	self.hide_mark()
 	self.color = tuple(color)
@@ -342,10 +343,10 @@
 	self.label = Label(top)
 	self.label.pack(side = BOTTOM)
 
-	viewxy = ChooseRGBXY(top, xyramp_size[0], xyramp_size[1], 0, 1)
+	viewxy = ChooseRGBXY(top, xyramp_size[0], xyramp_size[1], 2, 1)
 	viewxy.pack(side = LEFT)
 
-	viewz = ChooseRGBZ(top, zramp_size[0], zramp_size[1], 2)
+	viewz = ChooseRGBZ(top, zramp_size[0], zramp_size[1], 0)
 	viewz.pack(side = LEFT)
 
 	frame1 = Frame(top)