I'm pretty sure there were two-tone combinations for the 54-55.1 series. You can no doubt find exactly what your looking for and color schemes at the GM Heritage site.
~ Craig 1958 Viking 4400 "The Book of Thor" Read the story in the DITY 1960 Chevrolet C10 "A Family Heirloom" Follow the story in the DITY Gallery '59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)
If you don't like driving yourTruck, you won't drive yourTruck..| Living life in the SLOW lane
Here is a bulletin that better spells out two tone colors. Bombay Ivory was a 55 color although it shows up in the updated pages of the sales data book. Shell white or pure white was correct for 54.
Where I grew up, the GM dealership would commonly add white or light tan as a top color...mostly to try to help keep the cabs cooler in summer. They did this all the way up until 1963 or so...whenever A/C became available. There was one truck in town that was red with a light tan (beige?) top that looked really nice and a dark blue one with a white top I always liked.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end