I love uplighting, it can really add a lot to a room, take this image for instance:
(image from presentations2go.com)
(photo from mdmentertainment.smugmug.com)
Since our color palette is purple with royal blue, teal and lime accents, I am thinking the table will be covered in purple table cloths and skirting and we will do two sets of blue, lime and teal lights behind us. I think it will look really elegant throughout the night and really add a lot to the room.