I see it as the lesser of two evils. No matter how much I tweak it it's going to be one or the other, so I figure it's better to err on the side of the color that isn't as hard on the eyes.

Also, part of it is an optical illusion. Putting a pink image next to a gray one is going to naturally make the gray one seem green. It's same reason why someone's skin in a blue-tinted image looks like fleshtone, even though it's actually more of an off gray. If you look at one of the images alone though I think you'll find that it looks a lot less green looking than your mind may be telling you when it's next to the pink version.