Not bad, Dre.
One tricky part about this shot, if coloring Harmy’s version, the source (and to some degree the color) switches halfway through the shot. I imagine this will complicate the use of your tool?
Then you have no other choice then to use multiple frames for reference in a shot.
Well, his switches with a wipe following the grey guy. So, the ideal correction would be two corrections that follows his matte/wipe. Or, a more sane approach would be to just find some settings that look reasonable enough on both ends. 😃