Working with what stays
Keep roof and siding separate in the comparison
A gray roof does not require the walls to be the same gray. Compare a lighter, warmer body and a deeper blue-gray to see how much separation you prefer.
Use the garage as a second check
A broad pale garage door can dominate an otherwise medium-gray facade. Compare it with a quieter body-related version, while leaving a natural wood garage unchanged if that is the existing finish.
