I have been working in Capture 1 Pro and LR 2.5 and 3.0(beta). I'm new to pp'ing. I can't seem to figure out how to make significant changes to colors. For example, if a corner of the photograph shows a pure white sky that I want to make dark blue without messing up the rest of the photograph, I can't seem to find any way to accomplish this in either of those tools. Similarly, if I take a portrait of someone wearing a green shirt and I want to make the shirt red (even assuming there is no other green in the picture), I can't seem to do that. I know many of you will think this is too basic a question to bother answering, but I would really appreciate some guidance on how to do this in these tools or alternatively what tool do i need to do this (ps?)? thanks!