Looking at the built-in app "apps/RGB-Color-Pick.py", it seems clear that both displaying things on the screen and CT input can be done with the help of the m5stack_ui module. However, it looks like uPy (or perhaps these specific libs) don't have much in the way of docstrings to assist, so performing a help(m5stack_ui) just gives a list of variables/constants/objects/functions, but nothing on the description or usage of them.

I'd really appreciate any pointers on how to use this, or even better, to the documentation. I'm not even able to find the firmware in the m5stack github, so backtracking it that way doesn't seem to be an option.