diff -r 705ed7162315 -r 20484deb89cd includes/clientside/tinymce/themes/advanced/js/color_picker.js
--- a/includes/clientside/tinymce/themes/advanced/js/color_picker.js	Thu Jun 26 18:05:42 2008 -0400
+++ b/includes/clientside/tinymce/themes/advanced/js/color_picker.js	Thu Jun 26 20:55:13 2008 -0400
@@ -230,7 +230,7 @@
 
 		color = finalR + finalG + finalB;
 
-		document.getElementById('gs' + i).style.backgroundColor = '#'+color;
+		setCol('gs' + i, '#'+color);
 	}
 }
 
@@ -238,8 +238,16 @@
 	if (color.indexOf('#') == -1)
 		color = convertRGBToHex(color);
 
-	document.getElementById('preview').style.backgroundColor = color;
+	setCol('preview', color);
 	document.getElementById('color').value = color;
 }
 
+function setCol(e, c) {
+	try {
+		document.getElementById(e).style.backgroundColor = c;
+	} catch (ex) {
+		// Ignore IE warning
+	}
+}
+
 tinyMCEPopup.onInit.add(init);