Ripping the Fright Fantastique

So, see this triptyc? See how it sort of has a plum/lavender/violet/purplie cast? In real life not so much. In real life it looks very green. Thus I have a question for all my artsy f-list peeps, what to do? I can't return it so I pretty much need to make it work. (TY Tim Gunn!) I don't have the best art skills, but I occasionally get by. They're on canvas and sealed with whatever, but can I somehow streak or blend in some purple? Is there a certain technique for that? What do you suggest? HELP! 

Seriously, LOOK AT THIS gorgeousness! The sheer depth, texture, and color just dazzle and fascinate me! I am honored, flabbergasted, and lucky as hell to announce that the fabulous, amazing, super talented RAVENARI aka moonvoice is going to illustrate my upcoming Children's Book! OMGOMGOMG!( more pics )