Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
This topic was tackled a while back here http://forums.sketchucation.com/viewtopic.php?f=322&t=39115&p=346116&hilit=colored+glass#p346116