Wedding question?

Hi everyone: My colors are apple green and turquoise. I'm having an outdoor tent wedding for 100 at my parents home. Our tables are square and will have the apple green as the main cloth color. The runners on the table will be blue. I believe for our centerpieces we are using about 15 sprays of white orchids. The tent will be washed in green light, and the dance floor will have huge paper lanterns above it. My question is what should I do for favors? Do any of you have any other ideas for decorating? Is this totally ugly. My wedding is in August and I totally want to change my colors...