Quote Originally Posted by JonFarron View Post
I freaking hate that boss. I always get hit by the aoes. I'm too busy looking at the parties HP and the little pop up that announces the color comes up so fast that I always miss it, end by the time I notice it in the chat log it's too late.
A good way to avoid that while healing is to always keep targeting the chimera (to see the attack bar charging) but "soft-target" (forgive me! I know not the proper terms to use here) your allies just long enough to hit cast. Not an absolute safety, but I've found it helps.

P.S. I use a controller, which has been incredibly useful and intuitive for this kind of action. Not sure how it is via mouse.