Pretty cool!
Felt like I was mostly planning out my route to see how I could hit every tile/object once. Which was fun to do.
The idea of the platforms stopping once they've been colored is interesting, and could be another avenue for more level designs. (Making sure you don't block yourself later by stopping a platform in the correct spot?)
With how precise you need to be, this game would benefit from some tighter controls, Which I understand can be hard to make since it's easy to get used to your own movement system during development. Which is why I think it should be done right away to make sure you don't build muscle memory to what you don't want.
Visuals are nice and simplistic.
Good job!