I did a little studying today on color correction using curves adjustment layers via Lynda.com. To start, the place is definitely worth the price of admission. It was an issue I've always had with my photos and this brought me a resolution to it. Intentionally messing with the colors for cross processing effects is the same tool but the way they're used is quite different. No wonder I could never clue in to the correct way of going about it.
If you can, give it a trial run, it's really not expensive and you'll learn a lot in a short period of time.