Grey beds
The safest of the darker shades: it goes with almost anything and does not dictate the style of the room.
Velvet in grey plays with light — the same fabric looks different in the morning and at night. If the bedroom gets rearranged often, this colour survives every change.
Colour does not change the price — you pick it after the size and the headboard height. See also black, navy, beige, green, and if you are after a particular shade, the filter holds all seventeen velvets.