Just picked some up from this place......EXCELLENT service and quality...check this link out:
http://www.paintscratch.com/
Read the entire process, they even offer paint pens which are great for the small touch up. I have used these guys for years, and they provide you the complete process with detailed instruction and stand behind what they sell...
Brumbach...they do post this about Chevrolet paints:
[font=arial,helvetica]Chevrolet codes can be confusing! For example, the color code 96/WA8867 listed on our site can be shown on your vehicle as 96U or 96L or 8867 or WA8867. Often there will be a BC CC before the color code. This stands for Basecoat/Clearcoat. The U in the paint code means the Upper Color and the L means the Lower Color. Two tone vehicles will have each color coded, i.e. 96U and say 36L. Also, it could be 8867L or 8867U.[/font]
Go to the site and follow the directions....