I figured out how to use Lightroom to do selective coloring! Or, I guess, selective de-coloring, since I brushed in everything but the pinwheel and desaturated it to 0.
Anyway, the "flower" (aka pinwheel) is one of Matthew's favorite things to play with these days. Who could resist such a fun bright spinning toy, honestly?
@overalvandaan Thank you! It wasn't too hard once I realized I had to use the brush tool to select the entire background and then desaturate that vs. selecting the pinwheel and doing...something else. Probably I should actually watch tutorials on this stuff instead of just going with the trial and error method. :)