Lightbulb Doodles by Clever Monkey Graphics contains doodles shown. All doodles are colored black in the pack.
Doodles come in 3 styles:
plain black doodles - use as is or add styles like white strokes, lock your transparent pixels and add a color, clip to paper, etc.
pouffy doodles with clear pouffy edges (they work great with shadows applied)
and finally in a version that has the appearance of being stamped - also easily recolored like the plain black doodles