Working with what stays
Keep the material changes readable
Lap siding and shingle-pattern gables can already provide variation. Start with one body color across both textures, then compare an alternate only if the gable needs more emphasis.
Work around porch shade
Tapered columns and a deep porch produce shaded areas around the entrance. Compare the light trim there as well as on the brighter gable edges. Leave stone pier bases and natural timber unchanged in the intended comparison.
