I'd paint white the TV wall in oder to make it visually higher and to hide the white color of the door, now the dark color under lines that it is rather low and different from two main doors color and height of third one. I like brown FP wall, it works good with sofas and will attract eyes visually raising the ceiling above TV furniture. And one more thing I'd think about: the 1-st photo shows that there are too much unconnected different heights (doors, mirror, TV furniture, FP wall, ceiling). Definitely some heights are needed to be connected. I'd put lower the mirror and the shelf above FP so that the TV furniture and the mirror up lines were the same height. To bring more colors into the room as it was mentioned above I'd pick up some colors from the art work for cushions and curtains.

Hi there! If you can provide a link to the first photograph you attached of the bedroom you loved on the Houzz site, I can guide you to the profile of the professional who designed that interior and they'll be able to tell you the exact shade they used, or if not, the next best thing!

I have the same colour Windows and same red brick on my house and I used Dulux Balsa it works well with the black and the brick

Could you hang the mirror on the back of your door? You may need to get stronger hinges to cope with the weight. As for paint for the drawers, either the same colour as the wall or the colour of your existing furniture and decorate as the previous commenter suggested. God luck with it. By the way . . Very neat bed-making there .