I prefer testing webgames or referring to gif/pics/videos on youtube for adding my onpinions on games ...uhm I like the light-effect around the player, maybe gaps as narrowed paths ("frameless doors") could be bit more widen to get the circle around you player at least fit through it too (looks more aesthetic in perfection there)?

Are those ...train's tracks or a lowered 2D-fence when passing those recent gaps?

"to still paint press left mouse button on red circle" could maybe get just lowered or capital letters? I'd prefer the first one in visuals. Spraying graffiti sounds like in saints-row game still cool in scenes, maybe by user's pointer to actually guide the image's outlines? Or that he have to re-draw a quite opacity pic/fonttext, depending if hitting the lines or failing? With optional passing by people, so they could get caught if keep interacting (while not clicking the spray-button keeps them safe, but mind the timer to complete that graffiti)?

Cool timer, does it prefer to 'progress' like a countdown?