Intriguing! I never thought of using the memory to draw pictures. That actually makes me wonder if a new type of puzzle could be added: images/animation. Maybe I'll have to look into making an expansion...
Also, that optimization is great, but I'm afraid someone beat you to it :)
https://itch.io/t/2265164/small-byte-optimization-tip
Regardless, I hearby name you SIC Systems Employee of the Month! ;)