They look like to me they are a powder coat , but I could be wrong.
Hrm... ya know thinking about it.
The atty I wouldn't want to mess with because it gets hot but... on the 801 a black ( or silver ,I've seen that color also) atty with a pink battery would probably look pretty neat. I have a ton of mylar holographic and sparkle tapes..
I would think they would be ok on the battery as long as they don't get on the atty.
Edit:..Here's where I get my tapes..
http://www.identi-tape.com/deco-gateway.html
There's alot of different places to get these but this will give you an idea of what to look for if ya want to play. They are mylar so I definitely wouldn't tape the atty with them.