Has anyone used this stuff to dye a clear plastic? I'm looking to dye some black just wondering how the finish would look? A transparent black or dark black?

I'm going to say a transparent black. Try Kool-Aid or Rit dye. Also try permanent black marker. I will bet you, the fish you are holding, that black marker coated several times will do the job for you. I use permanent black marker on some clear weedguards to give it a striped effect and it does work. Sent you an e-mail also.

Got it , thanks!