The problem with that concept is that it defeats the purpose of focusing on the content. The left sidebar attracts attention of the user a lot more than the content itself. This is the same problem I see on honolulu110's earlier mockup where the ribbon is colored.
Looks great without the side black bar. And the selection idea is nice too.
You see, Metro design language uses white "Segoe UI" font on a dark texture background, while Aero uses black text on a light sky blue gradient background. Microsoft didn't want to implement Metro fully to the desktop, they tried to mix it with Aero in order to help preserve maximum compatibility with existing programs (http://blogs.msdn.co...experience.aspx
) but they did mess up the desktop UI instead,...
It's really difficult to implement Metro design language without using dark background, the black side bar looks alike the Office 2013 start screen,... I have to admit that it attracts users' attention, but it did save space for users (by combining search-bar, navigation pane, details pane and the ribbon into one bar)
Anyway, thanks for your advice. I'm now working on a second concept which drives the users' attention to the content