My car's bonnet is 2K white, it shines like diamond, coz of one gloss layer, like what edwin said. But 2K paint is not metalic paint, coz metallic paint contains 'small pieces of shinny thingy' in the paint, you can notice it when you look carefully under the lights at night, while 2K is just clean and clear. I have seen pearl colours before, pearl colour is very very nice, but it's not as shinny as metallic and 2K, I think people choose pearl because it's nice and don't bother much about the gloss. that's my observations.