I am thinking about Primal epic past life (in two or three years when I get all the comms... sigh) Colors of the Queen - does this work with spells? I havent saw it mentioned, but I kinda hope so.
If not, then the primal fast healing looks decent - up to 80 (95 on level 30) free healing per minute plus amplification.
Also, are colors using the same table for effects as Double rainbow?
Ghostbane be with you.