Plus it’s probably more complex to engineer multi-colour (well, two colour) font rendering onto the video. Getting the background brightness for each character is as simple as adding all the pixel rgb values together and threshold in. It doesn’t need to be very accurate.
So I’m normally a command line fan and have used git there. But I’m also using sublimerge and honestly I find it fantastic for untangling a bunch of changes that need to be in several commits; being able to quickly scroll through all the changed files, expand & collapse the diffs, select files, hunks, and lines directly in the gui for staging, etc. I can’t see that being any faster / easier on the command line.