I am trying to chroma key out some elements of a scene in FCE. Sort of going to for a Sin City kind of effect, desaturate everything but a person in the scene. I can get a bright green shirt to key out but am having trouble with skin and hair. I can key those out and inverse them but when I do I end up getting a lot more than I want, due to the background having a similar color (I.E. tan colored dirt in background being keyed out cause it's a similar color to the skintone). I've played around with the adjustments with little success. Anyone with experience have a suggestion?