Its been said, tattoo, but thats only if you can land a perment musical gig, or else you'll be kicked from a hell ton of jobs.
The poisoning, I suggest just.... No, just don't do it, your doing that for life, and it would probably come with more colors then just blue. Other then that, find a suit that is blue and use cloth to be like a mask and use that, or do what daft punk does and just wear a epic helmet that represents you in your own little way.