Neil,
It would be nicer to find a GM color document instead of looking at the "restored" truck in the Brownell/Mueller book. Many of the photos in that book are of "restored" trucks, many with non-original-style parts.
Even GM illustrators were sometimes not exacting with their color drawings.
Denny,
It looks like the end-stripes in the 47 and 49 Chevrolet truck color sales-brochures are vermilion red. But, they are not absolutely clear photos/illustrations. The 1948 color sales brochure (reproduction) has the best illustration showing the red/vermilion stripes on the sides of the hood front-emblem
What year is your truck?
This is large file
330KB scan of illustration of front emblem. The scan res0lution was greater than the resolution of the image - there is a pronounced
Moire effect/pattern.
Here is a lower resolution scan. 
