Generally speaking, painting on makeup is not really a good idea. Think about it, the application can be messy, uneven, and overly thick. It seems like avoiding this would be a no-brainer.
No so for L'Oreal. Their new True Match Roll'on Foundation literally contains a mini-paint-roller-esque brush. You are actually meant to roll on the foundation the same way you would paint the walls of your apartment.
You've got to be kidding me.
The product has (thankfully) not made its way over to the States as of yet. If, for some ungodly reason, you feel the urge to replicate the look of a freshly painted wall on your face, you can purchase the compact online.