I must admit, I already decided to buy the Black, (only one in the shop), when the Salesperson had a look at stock and noticed the new colour for 2013, the Matt Gray, just arrived in a box, they opened it, and we all actully said that the contrast looks better.
Look at the Fork contrast, for example.
The negative is that the Matt finish gets dirty easier, harder to keep clean, but I do not buy the motorbike for that, just to ride around in.