ryry,
any auto paint store will be able to match the colour, Just take them a sample , , try and find a piece under a handle or inside that hasn't faded, I would suggest having it media blasted first, however you will normally have to buy half a litre of it. They can also make any colour you want too.
You other option is powder coating and they should be able to get the colour mixed there two
I did this with a old BVC I am restoring.
Gareth