Matt blue looks really cool. But i am not really sure whether a girl should get her car matt finished. But its her choice at the end. Actually there can be two things she must have seen: One is sticker. Its only really apaint but sticker which gives a matt look on the car. that is way cheaper than actual matt paint. If you go for the sticker, i think it will cost you almost 1000 AED. But if you go for complete matt paint, minimum it will cost you 2500 AED. Choice is yours!