Weddingbee boards

Looking for a litle help again, please!! i bought these gorgeous candelabras at Michaels from their Holiday Shimmering Crystals collection and I plan to use them on half of the tables for tall centerpieces. I am making Pomanders to sit on top of them and was planning to make them out of hydrangeas (and possibly roses too).

My question is should I do each pomander all one color (i.e. purple) or should I do each one multicolored (i.e. red and purple; and that could allow for different types of flowers too.)?? Here's some pics to give you an idea:

Thanks bees!!!