Well it depends on your wall color as well . since you have such concrete looking floor I would recommend you can chose any electic color like lemon , orange , yellow to give a bright look and uplift room mood or chose any pastle color of your choice for subtle feel . :)

Consider Grey or white. U could also use geometric or any pattern in mint green

A combination of Offwhite, Beige Upholstery and dark shades of wood would look good. Provided you keep the wood minimal . The floor can also be a similar shade of wood . Remember whatever you do, make it look rich and elegant, only then will you be able to pull this look off. I am assuming the your ceiling is considerably high as well. Paint the walls and ceiling in offwhite shades with only the feature wall grey

Hi,it's very good idea to keep the bedroom color scheme black or any other darker color which vl look elegant if it's done well...but as per color psychology black is suppose to carry little negative emotions like sorrow and all . Please do little study about color black and go with it only if u r confident ..We suggest u to go with a neutral color scheme and consider black 40 or less than that in overall percentage....Happy renovating..