I know a challenge: TheDRAW

[James D Jarvis]

Instead of combining SCREEN 0 with WIDTH 80,25 (or WIDTH 80,50) you can also use _NEWIMAGE with some extra rows and columns to use it to preview/select the color palette.
The extra rows ensure that you don't have to scroll.

Pretty much what I do here. screen 0 drawing (qb64phoenix.com)

I'm not trying to replace thedraw but I am certainly operating in an adjacent space.