Quick rundown on color theory, Black and Gold have been used to symbolise luxury since the beginning of Kings and Queens in Egypt. (700BC)
Sticking with the Black pallet, almost anything in a darker gray tone, tells the human brain that this item is expencive.
Now that you know this, next time you are ready to put in some tile or a new countertop or new siding, you might want to think about using a gray, and not a brown.
Yes, It's really that easy.