Why not get it vinyl wrapped like Lotus did with the show car t'other year.. union flag.. or your own design? Thats big in the scootering world at the moment. Cheap enough too and you'll keep the original finish underneath
There's a place in York that does amazing finishes. Its basicly a very thin film that is laid on a tank of water. You then lower the frame into the tank and the film sticks to the frame. Its then laquered over. I've seen a frame done this way and it looked brilliant.
If you look at Ricky Feather's blog there is a link to the place that does this work.