DIY Pineapple Costume dye up a yellow shirt or dress (maybe stamp some texture on their for extra fun) and make this cute ah hat (?) for the full effect! Definitely for the fuddy duddies that claim they won't dress up!
Create an inexpensive and easy centerpiece using food coloring and simple white flowers in bud vases. I like the idea of the colored water with maybe white roses and the colors of the water would be the colors of the wedding