what is a Warping collor or Tint,Texture/shader, Question

Eleszar1

Hey everyone i just finished this litle alien bugg and i got a question, the collors you see under the shadow such as the purple/redish/blueish collor is made with lights, now my question is,  is there a way to make these collor effects with warping collor texture or something, i cant find a proper tutorial that explanes how the map works,
the reason i am asking is because,  I want to create some stylized models with stylized warping collors around them for a warm effect on the eye,  sorry for bad grammar  

Eric Chadwick

A couple ways to approach this. Depends on which game engine. You could do a view-dependent falloff effect (like Fresnel) combined with a vertical gradient effect. You could do this with a BRDF function too.