This lil’ rig gets the job done. Good to bring with you on the go for them outdoor heady rips. The color changes on this one (I really don’t know the word to describe color changing glass). Only seen distilled water, and only used 3-5 times ever. 

The color change is called CFL and they have UV glass that changes under a UV light. But, u have a 'CFL' color changing piece.  

My guess is Parallax from Trautman or Potion by Glass Alchemy… glws! 

Yes either potion or parralax. both CFL colors. Cheers. Thanks for posting 

Boogieglass twisted cube