Actually you can purchase one here: http://pckeyboards.stores.yahoo.net/adcolkey.html they even provide different colors and special keys (windows key into a meta key etc.) - I have the dark grey one and I love it.

You can also get APL stickers that fit onto any keyboard (I put them onto an hp 1000 laptop even) from here: http://hooleon.com/miva/merchant.mvc?Screen=PROD&Product... for about 15 dollars. They actually work really well - I would advise using a pair of tweezers to get them positioned exactly how you want because one they are on they are pretty permanent!