Originally Posted by JDClosser
..takes some color theory and practice to nail that technique, or if your file structure permits for serious issues you can take the problem area onto another area with the original image....blur it until there is only color data and set to color while adjusting the opacity for the desired result.....same way you would correct color moire issues. There are too many techniques to list but these are what I find the fastest and easiest in my daily workflow.
That's kind of why I suggest everyone do a little photoshop painting when they're really new. It allows you to pick out any color juxtaposition you want. Over time that would hopefully impart some level of practical recognition. Combined with good reference, it allows for some understanding of what is being visually conveyed to the viewer. Just to add this, a little noise often helps with moire. It also sometimes makes patchy color easier to spot if left temporarily on a layer set to soft light or overlay. You just have to be careful with it, as well as not overdo it. Things are sometimes hard to spot if the image feels a little flat, but what I just mentioned works as a visual trick.