Algodoo

Welcome to Panic Painting - User Version!

It has the same core functions as the classic Panic Painting, but this time, you get to participate!
Rules are simple: colour as many objects with your colour as possible!
After customizing things, press [Return] or [Enter] to start!

There're 5 arenas built, and they're chosen at random, so you'll probably won't be bored too quickly.
Each arena is designed so that every object can be 'painted' and they're very pleasing to the eye.

Note: I have no idea whether this scene is in Technical or Marble group.

Warning: may have bugs and flashing colours.