Decoration Suggestions?

I am getting married on June 26, 2004 and am in need of some suggestions regarding decorations. I intend to use large white calli lilies as the main flower in the centerpieces (as well as in the bouquets at the ceremony). I love the look of all white flowers with greenery and candles, but I also want to have some color at the reception. My bridesmaids are wearing sky blue dresses and my dress also has some blue in it so I would like to incorporate a sky blue into the decor some how. I`m going for a classy, elegant reception. Any suggestions?