[Ryan Denny]

I’ve got a similar project, but with a different end in mind:
Subject with guitar, shot on green screen. I’m pulling a great key already using Keylight.

GOAL: To desaturate the figure to black (a la Apple/iPod spots) *except* for keeping the colors of the guitar face (natural wood) intact. It’s a nice look in our mock-up stills done in Photoshop.

I’m guessing the approach is something like Colin’s suggestion:
1-Key it normally
2-Duplicate the keyed layer
3-Desaturate this upper layer (using HSL or Keylight’s options), but mask out (roughly) the guitar so it shows through from underneath.

… can y’all think of a better work flow? I’ve played with the Leave Color effect, as well as with transfer modes–I’d like to avoid lots of roto on the guitar if possible. (I’m testing these suggestions right now to see if they apply to my project.) Thanks all!