I think your colors are restful so I would work with those and not pop a color. Maybe some interesting artwork that had some color in it, but I think you should go for a more elegant calm look. By the way, I like the chandelier you have with the fireplace. I think I would paint the lower part of your wall the same blue as is in the top part. Then I would add some black accents in glass and lamps. Curtains that have a sheen or gold thread would be nice.

You can really afford to go for drama in a bedroom and paint it a dark color if you like. If you find that a bit of a 'commitment' I'd go with a dark wall where your headboard should be. It would work well with the frames and mounts that are on your pictures above the bed. I can see you're currently sharing your room with a baby so a blanket box (a decent one you can sit on) would be a good investment to get those toys out of view. Don't go crazy with wood, I'd get one you could paint and change the up the upholstery on the lid so that you can update it every 5-7 years as you will with your room.

I'm doing something very similar at the moment and I decided to go for a cold ivory colour with the windows divided into same size panels and a grey front door. The frames also have a foil finish that gives them a faux wood texture. I decided against the grey frames, as much as I love them, as I think they will probably date in the same way the pale green ones I see around have too.

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 .