I want to recolour a bitmap - specifically what I'm trying to do is the sort of thing you'd normally do in photoshop - attach a face from one picture to a body in another picture. If the lighting conditions in the two photos are similar, this seems to work pretty well, by cutting out the face from the second picture, superimposing it on the first, and feathering. If there's a slight variation in lighting conditions, you can get around this with a similarly shaped and feathered overlay, with a flat colour and transparency applied to it such as "darken", or "saturation". However, what I'm having difficulty with is adjusting colour temperature. Differences in indoor vs. outdoor lighting etc. seem to make hue adjustment very hard. Is there any easy way to do this I've missed? I can't seem to get it to do much sensible either in Xtreme (through various uses of transparency) or XPE. I'm not a Photoshop wizard so I don't know if it's easier there.