This post was published more than a few years ago (on 2014-01-08) and may contain inaccurate technical information, outmoded thoughts, or cringe takes. Proceed at your own risk.
I realize this is probably something that only I want, but just in case, here it is for Google (and for future me, who has forgotten how to do it).
Run this in the Terminal:
[crayon-64cc3c9445a7e298046041/]Thanks to my pal Jim Correia for figuring that out! He asked me to name a background color in his honor, so I choose “Correia Battleship Gray”.