Glad to see this...I'm a huge fan of tans and browns in garages. Its warmer and more comfortable.
Another trick is to use a few drops of black per gallon of white base for walls or trim. So many people use straight white and it makes for a really harsh feel, even looks slightly blue under certain lights.
Sherwin Williams "Snowbound" white is a good off the shelf version of this.
@Kram - that border looks blue to me as well, but so does the topmost prop blade on the plane, while the others look black I think it's just reflected light.