Daisies would be a cute flower to have with those colors. Then maybe you could include some yellow in with your centerpieces. For the centerpieces at our wedding we are using a vase that is very skinny and opens wider at the top. Its about 7 inches tall. We got some clear adheasive and (Fake) crystals with glitter. We are going to roll the top of the vase so it has the glitter and crystals around the top. We got some of that gel that you can make different colors to fill the vase and then we are going to use the candles that flicker without a flame and sit them down inside on top of the gel. (we aren't allowed to have an open flame in the reception hall.) Then we are going to put flower petals around the bottom of it. And that is all I have come up with so far. I have no idea even what flowers to go with for myself. We are having Pink and Brown as our colors so if you have any ideas that would be great!