Here is an idea, where you can use as much color or as little as you want.

Purchase glass blocks from your local Lowes/Home depot or other similar store. (Approx $8.00 per block) Place ribbon around the block to make it look like a wedding present and place battery operated twinkle lights inside the block. You can use whatever color of lights you choose. Note: Keep these for decorations for christmas parties using red and green lights.

They look very elegant...yet not overdone.