Here's what I found:
http://paintref.com/cgi-bin/colorcod...page=2&rows=50
It didn't specify Truck, and I believe the truck colors were under the Chevrolet category. You color looks like Desert Beige. The best thing about that chart is that it has the paint codes for many different paint manufacturers. That will be a big help when it's time to have the color mixed at the paint shop.
Hope this helps! By the way, the truck is looking
great!