We're installing a recessed light in our living room -- directly out from the fireplace to lightup a painting hung over the mantel. The question is -- how far out from the wall should the light be placed? Other recessed lights in our house are 23 inches out from the wall. We have a designer telling us the light for the painting should be placed further out. Electricians are telling us it should be placed closer to the painting. Who can advise?