I just wanted to give a little advice here..
One word of caution when addding COLOR to your Chuppah's.... Usually, the color will act like a filter to the sun, and suddenly bride + groom become PINK, or GREEN or even BLUE. So, in your photos, your skin actually becomes those colors.
Sound Crazy? Its very real, I'd say Pink has to be the biggest problem, just avoid too much color as it will damage your photos with skin tones that are just the same color!
I'll try to find some photo examples...