I only took a small peak at the Aseprite API when making a touchscreen undo/redo button and I saw ya use some arrangement of pixels in your code to generate the patterns.
I didn't look too deeply into either, but it all looks more advanced than what I understand atm. I can't (yet) image the amount of work that went into it.
Thank ya so much for making this tool. It's helped a great deal with making variably shaded drawings for the Playdate.