2 Plugins by Chris Fullmer

Chris Fullmer has released 2 new plugins: ExtrapolateColors and ColorByZ

ExtrapolateColors:

This script finds materials used within a selection of faces, and then randomly applies those same materials to all selected faces that have no material already applied.

ColorByZ:

Color By Z paints faces based on their centerpoint's Z height. It uses colors selected by the user.

See this list for a complete list of Chris's plugins.