Randomize normal direction -tool

To create random colors to any faces in mesh, it would be useful method to have a tool that randomizes the direction of each face normal with some value that we can get to cycles and use as factor.

By multiplying this value, it could be used for polygon art, tree leaves etc.

If this is stupid idea cause of some reason, them some sort of "fake normal" -value could also do it, so it wouldn't effect the look of the object, but you still could get those random values to every face and use with cycles.