After applying my color checker's corrections, I decided it didn't go far enough and tweaked the color wheels in Color Finale a bit. I'm happy with the results. In my last test, I forgot to disable the ND filter on my camera. Whoops! No wonder it looked so dark at 1600 ISO.
This time I placed a wide LED light over my head and wrapped it with cinefoil to control the spill. I bounced a spot light off a collapsible reflector in the background (seen in the picture frame behind me. I'd move the frame in an actual shoot). I should have bounced the spot light closer to me to get rid of the dark shadow around my right eye.
I'm no colorist, obviously, but I think the first picture has a magenta tint because the green channel is much lower than the other two. So I lifted the red, green and blue channels. RGB parade shows the image is still biased towards red, but my t-shirt is pretty dominant. It's an improvement and looks good to me.