Often when I'm trying to figure out how another retoucher achieved a certain look (or why my image is slightly off to the target image), I'll deconstruct their image into value, hue, and a saturation mask. My deconstruction action that does this is found here:
http://www.mediafire.com/file/8rf96ihyv33hq5a/Deconstuction+Actions.atnNote, the hue/sat/value action helps visualize the hues of an image using a solar curve. If you want to see the hue like it's shown in the attached image, run the color separation action and disable the luminosity layer.
