Demo of a 283 byte program for the CoCo 3 that draws Mona Lisa, based on a Code golf entry here: https://codegolf.stackexchange.com/questions/126738/lets-draw-mona-lisa
The original code was for an Atari XL 6502 based system that used some system calls to make it even shorter at 250 bytes.
A little web blog about this program can be found here: nowhereman999.wordpress.com/2022/11/02/code-golf-on-the-coco/