You're right, they do make a real statement when there is a lot of white in a room. In the images here the rooms would still be pretty without the black but the contrast really makes the rooms shine.
I'm right there with you on being on a white/gray kick. We painted so many bold colors when we first moved into our current house; I just want the feel of a clean slate. Those window definitely look amazing. I love how they blend more with the outdoors than white panes.
Wow all this interior design looks so classy and chic! I wish I had the money and space to make my apartment look like this! <3I would like to invite you to my current giveaway, you can win lovely glasses/sunnies there. Come and join if you like:http://badtastetoasttoast.blogspot.de/2013/08/firmoo-classic-series-giveaway.html
Thank you for your comments, it makes my day! If you have a question, I will answer it in the comments section as soon as I can. You can also email me at firstname.lastname@example.org.