welcome...when you go with the deep AND vibrant colors a little goes a long ways....you have several fixed colors, your roof, your vinyl windows, and by choice the stucco,,,if you go with the garnet, i would definitely paint the railing black...your stucco, if it were darker, i would say that the garnet may have possibilities, ....i would be concerned about contrast,,,, my advice, buy a quart and do a mockup, only then will you know if its going to work......good luck