Liquid Crystal Resources just sent me a 100ml sample of "Chromazone Color Change Ink". Previously it was referred to as Lueco Dye 31C but now I see that's not a part number but rather the temp it's affected at. ( 31 celsius )
I will post the info here only as a reference for those who want to try this on their own but must first give the warning that procuring this ink does not mean you made a Rorschach mask. There is a lot more setup and planning that goes into this. I still maintain that if you really want one just buy what Kwally is making. I'm making my own and even I admit it will end in tragedy and will end up buying one of Kwally's when avail.
scott @ lcr-usa.com
Perhaps the real reasons I'm putting this up is because:
1) I'm lousy with remembering stuff
2) Many of you may find a need for this chemical that goes beyond this specific project, and will wish that someone posted it for later use
3) We're here to share
Also, this stuff tastes HORRIBLE although it does go good on a salad. I don't feel so well....