I have a buddy over at a local music store that is working on his kit, sorta the same way. He's convering the whole thing in Star Wars comic book pages. Now, I don't know what he's using to cover the pages and make them waterproof and all, but I've seen pictures of it and it is totally RAD! You can "read" his drum kit! He said it is taking a ton of time, but man, it is so worth it. Never seen anything like it before. I'll try to find out how he's doing it and get back to you.
You've got an interesting idea, but keep in mind that you will want to end up with a finish that is waterproof, scratch resistant and likely shiny, not to mention it needs to be thin enough so's not to destroy the drum's resonance.
You might go to a hobby store and get some of that old school 'decoupage" stuff (spelling, anyone??). I think it comes in a bottle and you just brush it on. Good luck man, I'd love to see a photo of it when you are done! Very cool idea!