I set my camera's white balance to "Shady" instead of the usual "AWB (Auto White Balance)". That way, my photos won't look pale and the colors would look warmer than they really are. I'm a fan of warm skin tones.
The colors are mostly just heightened via Hue/Saturation, Selective Color or whatnot, from what I can remember (this is an old picture from last September). The technique lies in the photo itself, not the editing.