Vet Maw Color Swap Addon Help (Skinrai + Vashai)

[polysemy]

Hey everyone.

A guildie and I are trying to develop an addon that will tell the player when he is being targeted by the color swap mechanic on the second boss in Vet Maw... specifically the Skinrai + Vashai encounter

What we are having trouble with is identify the event of color change...

Anyone have any ideas or know what we need to do?