Here is a free downloadable info packet for an '85 Chevy pickup, from the GM Heritage Center archive.
This will show you all the available options, including colors, and their descriptions (will also highlight the differences between Custom Delux, Scottsdale and Silverado):
http://www.gmheritagecenter.com/docs...olet-Truck.pdf
If you can show us your SPID (service label) we can identify your truck's original paint scheme. We can also decode any other options you might have a question about.
Here are some original brochures to review for paint schemes and such:
http://www.lov2xlr8.no/gmc.html
Lastly, for $50 you can send your VIN to the Heritage Center and they will send back the actual original invoice for your specific truck, including option content and pricing:
http://www.gmmediaarchive.com/?page=3
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