Hello,,,,i am trying to find out if there is an ink out there or an additive that can give me that "oil slick look"///kind of like a rainbow effect!!...or like the polarised sunglasses or snow goggles........i have seen cars painted in this kind of colour/effect....but i havn't seen it available in a t shirt ink......any suggestions???? Btw....i know there is a foil that can give this effect....but that's not what i am after........much apprecited any help!!! Peace!!!