Hey guys, I'm looking for a way to dynamically change a random color in an image. I'm trying to do some sort of "fill" effect on an image. So, my user can select a vectorized image via the UIImagePicker with only a having only a few colors in it and can then flood fill for example all red with blue. I 've been reading some stuff on Quartz and working with filters, but sadly enough with no actual helpfull results Anyone here who could help me out or at least guide me in a good direction ? Thanks!