Honestly rather cute, although it'd be nice if the music looped occasionally!
I'd also agree that it'd be nice to have some "manual" starts, but that's a stylistic choice, I suppose
I'd love to see the stats of things I've maxed out, rather than hiding them once I can't upgrade them, and I had a bug where the worker was just pushing the dye blob around rather than absorbing it, although eventually it got lucky and managed to absorb it!
EDIT: I'd also suggest making the workers clip through the globs, just so they don't push theirs or the others, production will randomly be far slower because one worker shoved another worker's glob way far away!
I also rather enjoyed the rooms, I figure I should mention the things I enjoyed, too, even though they don't need action!