This rose theme wedding idea pairs the vibrant fragrances and colors of roses with the beautiful colors of the rainbow for a casual, yet unique celebration.

Depending upon the roses (types and colors) that you choose to use, they can impart either a formal or a casual atmosphere.
With this particular flower theme, we'll be focusing on a casual setting using the colors found in a rainbow (soft shades of pink, red, orange, yellow, green, blue, and purple), along with complimentary corresponding roses.
Overall, do you want to stick to one color for your wedding party's attire or have each bridesmaid sporting a different color? Whichever you choose, be sure to keep the style of the dresses and suits the same for all of your attendants.
Go with traditional white, perhaps with roses embroidered on the gown. The tiara or headpiece would have roses as well. Some veils have a rose lace trim that you might want to consider.
Choose either one color from the rainbow or have each bridesmaid wear a different colored dress... all dress styles should be the same though.
Stick with pastels, rather than vibrant color choices. Soft and subtle is what you're looking for. Have each of them carry a matching colored single rose.
Go with dark blue or green suits, rather than black. The cummerbunds and/or vests could be varying colors of the rainbow for each man. Alternatively, give each groomsmen a different colored rosebud boutonniere to match the flower carried by each bridesmaid.
Keep to your rose theme wedding by sending your guests invitations that feature this beautiful flower. A simple imprint of a rose on an invitation looks very elegant or choose one that offers some color.
An alternative is to select an invitation that features a rainbow. You could place a small silk rose bud inside the invitation or tie one to the outside with corresponding ribbon.
If you're making your own invitations, make up your own version of the "Roses are Red" poem verse.
Alternatively, you could include the song popular children's song: "Can You Sing A Rainbow?"
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Watch this video by Preston Bailey on how to make a Rose Bowl Centerpiece. It's very simple to do, yet very elegant and a great idea to place in front of each guest's seat:

Instead of the typical white or chocolate cake, why not have your baker create a rainbow cake with each layer being colored one of each color in the rainbow. Each layer could be iced to match.
A simple white cake can also be dressed up in a colorful fashion using flowers, as shown in this photo.
Here, we see white and dusty pink shaded roses with purple floral accents and some greenery.
Think of ways in which you could change this cake style to suit our multi-colored rose theme wedding.
Rainbow and Rose Theme Wedding by Rose Smith © 2006-2010