There is also listentoyoutube.com which extracts the audio from the video and let's you download. It's free, no installers, etc. Only to be used for non copywrited material of course. But if you really want the audio that bad, pay for it.
You could always plasti dip them too. I'm sure a can or two would do at least a wheel and give you more than just a Photoshop image to judge by. If you don't like it you can just peel it off. Also they sell a "glossifier" if you want the shiny look. Just an option before you drop the cash to get them powder coated