Is it possible to make objects shine a different color?

Totally new to modding the sims and trying to figure out if something is even possible to do. I am trying to see if I can make objects shine in different colors. I've been looking at spectral mapping which controls the amount if shininess but I haven't seen anything about what I am trying to accomplish.

Specifically, I am trying to see if I can take the black mermaid tail in CAS and make it shine with gold highlights. I want to keep the underlying color black but give it a golden sheen. 

Thanks!