Louie: It appears that old PRs might merge as they are but any change, including an update merge, requires that you close and re-open.  When you re-open, please add "was prnnnn".  It would be easier for me if you redid all the IDLE PRs in a batch or two.

Cheryl: Yes. Idlelib callables need docstrings, especially because they are not otherwise documented.  Based on our work on bdb, I was hoping you would work on IDLE.  I added you to #30290

Some of the colorizer functions are hard to usefully characterize.  This is parly because everything is done by side-effect and most functions have multiple side-effects.  There is a connection between the lack of docstrings and the vestigial nature of test_colorizer.