I love this idea, it would work especially well for an outdoor, festival themed wedding.
Guests throw darts at the balloons, which have been pre-filled with various coloured paints.
Each balloon has been attached to a canvas.
At the end you have a lovely piece of art and a reminder of your day, created by your family and friends.
Now why didn't I think of this for my own big day?
Much love and happy planning,