Wonder if a someone has already written it...

Like this sort of thing?

Here's the code, its pretty simple

Exactly! ... Amazing! Will try to replicate it!

Thanks for sharing the code! We made this on the AI class last week. Wrote it on Processing.

*at* the AI class. Sorry my grammar! english's not my primary language.

Yeah the algorithm in english is: For every coordinate on the screen, make its color the same as the closest point to that coordinate