Color support

[SPYFF]

I know it is mono for a reason :-) But it would be really cool if the shapes could be colored as well (fill color, border color, text color). Sure, exporting it would be tricky, but I'm pretty sure every terminal out there supports some sort of coloring (even if only 8bit palette). I would use the terminal as a presentation tool, so this would be perfect.

How it might look like? Take the example below (from this presentation):

[tuanchauict]

Let me refine the UI (at least after making use of tailwind, the UI is more manageable now), then thinking a way to support this