Hi.
I got your message through my website, but I will try to explain here, what you need to do, to achieve silver and matte effects.
To achieve these effects, you have to edit specocc.tga file. As you will notice, this file is in grayscale. Everything what is WHITE, will be glossy. Everything what is BLACK will be matte.
You are trying to achieve silver and black matte effects.
SILVER:
For silver you need to use a gray colour. So all parts of your livery, which are gray, have to be WHITE or LIGHT GRAY in specocc.tga file. You will have to find your proper gray intensity to achieve desired silver colour.
BLACK MATTE:
Same as above, but this time all parts of your livery, which you want to be matte, need to be black in specocc.tga file.
Probably you will have to make a few attempts to find out your desired effect.
And do not forget to save your specocc.tga file with a right settings. You will find it on my website (Tutorial).
http://dirt-lounge.***********/dirt/tutorial
Sorry for my English, but I hope you understand everything.
Cheers ,
Goozys