Have you considered making stickers? I recently did a design where the entire front panel labeling was replaced with stickers. You can see it here:
http://seaweedfactory.blogspot.com/2011/02/lumberjack-fight.htmlI measured each space and produced the design in an image editor, then I had it printed on full-sheet label paper at a print shop. Cover this with clear contact paper and you have very durable stickers. I trimmed the sticker to shape and sanded the area to be covered before applying it. This was a very cheap way to completely relabel an entire machine.
I'm going to try scanning an entire keyboard to create stickers for another project.