any decent paint/bodyshop suppliers will be able to help
i thought about doing my car matt red...... and always wonder'd if you could just take the clear coat off...... anybody know if thats an option?
I would look into vinyl wrapping rather than actually painting the car. This way if you want the gloss back, you simply rip off the vinyl. Plus the vinyl will help protect the paint from stone chips and the like.
If your paintwork is in decent condition why don't you just provide a key for it and put some matt lacquer over the top?