Brown Transportation had a strange looking fleet - tan/beige tractors, day-glow orange stripes with green logos and yellow lettering. They definitely were noticeable.
My rendition is using a 2nd generation AMT/Lesney reissue of the Kenworth COE. I swapped in 2-hole wheels from Kit Form Services, some single headlamps and shortened the wheelbase. Mine is loosely based on multiple Brown tractors of various ages as seen in photos on Hank's Truck Pictures.
I couldn't find a color that matched the creamy-brown-beige. Mine is Krylon beige and is slightly dull compared to the real color.