Keep in mind, the type of candy and style of the ribbon can be changed to suit the current holiday... So this isn't just a Christmas idea!
NOT gluing the glass jar to the base means you can easily wash it as needed.
Krystal's mother did the same project with a textured paint, and it was far harder to get coverage on the clay pot. My guess (since I have used countless spray paints) is the textured paint soaked into the clay too easily. the texture was there, but the color wasn't. The texture also wanted to clump up on the clay creating an uneven appearance, and the extreme spray force in the can made the doll heads roll around while being painted... Not good.
So to sum up, just use plain ol' cheap paint on your pots.