What I (and several others) have done is to download AMX's TPDesign 3.xx (www.amxcorp.com - go to the Software Center located under Dealer support) which comes with a library of descent looking transport icons (both for active and non-active state), devices, etc. Put them on a page, export the page as a bitmap, then use some graphics tool (Paint will work) to crop the desired images. Very time consuming but once you have them, Crestron things will look much better. Be sure to use Crestron's ability to hide the background color to keep them looking good.
Crestron's standard "font" based transports look very cheap and bad.
-ws-