To make an off-the-shelf porch light look like a vintage find, brush the metal housing with a base coat of flat charcoal or black paint. Then apply several coats of an antiquing solution. Wait at least three days for the chemical reaction to turn the finish into a warm and mottled green.
$27 to $50. Exterior sconces, from $15 each; lowes.com
. Sophisticated Finishes Patina Green Set, $12; misterart.com