I make all of hides myself, and I am working on a new one that I made to look like a little house. See?

http://tinypic.com/r/fokcxz/6

He can even crawl through the chimey .Right now it is just made of plastic, foam board, tape, and paper mache. I don't know if any of you would know, but would normal water based acrylic paint harm my snake? I have never used paint on my hides before. I meant to paint him some nice bricks and shingles, but does anyone know if it could be harmful?