Check out the following blogs for directions on how to do this:
Life After Empty Nest
A Diamond in the Stuff
Rog and Chief Phillips
The Daily Craziness
She also stenciled some pots with the bride and groom's name. I didn't get a chance to ask how she did this, but I assume you just paint the pot your preferred colors and then stencil in the name either with paint or a black sharpie.
Her son, Andy, did the following project using a wood burner pen.
Overall, some very cute and cost effective ideas!