Will, the other color on the two tone tractors, 1957 and later, is called Desert Sunset. While you will see DCs, SCs, VACs and LAs painted two tone one of two things has happened.
1. A new owner either didn't know they were all Flambeau Red or just liked the two tone scheme and painted it that way.
2. I have been told by folks in the know that dealers painted the older inventory to match the new models in order to update and sell them during the model change.
BTW I also agree with Derrol about Texas operators and painting them proud.