Here's a house I finished building in 2005. The buyer asked me this morning how she could "modernize" the exterior. At the same time, even newer homes in the area are striving to look more traditional--recycled bricks, stones etc. In building this house, the idea was to create an established look; I was actually flattered when several trades at first mistook it for a reno.
Century concrete brick, Arriscraft stone, tinted mortar, fluted columns combined to
create an established look
In any case, all I could suggest was refacing with different bricks/stones, hardcoat stucco or a wash, though these are usually applied to make a home look more established.
Any pertinent thoughts appreciated.