What to print a CPO on??

[badgerjohn]

Created and completed my first cab and now just tweaking bits. I went with a plain black cpo with a thin Perspex sheet over it for protection. Hasn't worked as well as hoped and plus people keep asking what the buttons do....

So, if I was to get a cpo designed by a friend, what's the best thing to print it on?

I'm in the Uk and I think brand names etc may be different but any help would be much appreciated.

P.s. I've seen the stickers you can get for the buttons but they're American (25c etc) so not a look I want on my cab...

Thanks in advance