haha the barcode just came printed on the tubing... i would paint it but i dont want it to chip and start to look all crappy. I know for a fact that if you heat up water to a boil and put clothing dye in it you can dye PVC just like lacrosse heads.

here is an example of what i am talking about

I know its not for Bongs but you can do the same thing with a pvc tube.

E-Lacrosse Stick Tech Workshop
v0Lume Reviewed by v0Lume on . Rate my homeade. Dimensions 14" tall, smoke capacity: about a litre, Bowl: hand made wooden bowl turned on a lathe with a metal downtube body: 2.25 inch pvc pipe with 1 inch pvc as extension for downtube to slide into. this thing smokes sooo good. you can pack the bowl with a little over a whole gram. the great thing about it is that it smokes so milky its tough not cough LOL. The first time I hit it it kicked my ass. Rating: 5