Natural Mahongany with an oil finish looks amazing similar to oiled cherry. The dark red color of mahogany is due to exposure to UV that darkens the color of both mahogany and cherry. Now the dark dark red mahogany we typically see is stained, but I would think cherry RM40's would match quite well with the mahogany, even if the mahogany is a darker color. My living room is paneled with tung oil/boiled linseed oil/spar varnish mixture on Mahogany that looks very similar to my cherry flambe speakers.