For anyone playing around with ladder "dark mode," using pure black for Box Instruction background colors doesn't seem to work. I could set it, but the ladder didn't update when I hit Apply and if I left/returned to the Box Instruction Class Background Color Setting popup, the colors were back to defaults.
I even tried running as an admin and it didn't work. What DID work was using a color that was ALMOST black.
So, that's weird but can worked around.
