Love this. Mysterious and cozy.

You forgot to make sure the addon bar and tabs (especially if they are tree style) remained dark, because you included only the very top part of the persona. You need to use a full-sized image so that people like me who love your theme can use it. As it is now, I can't use it & I know many others wont either, because there's too much white left on the screen.

Love it - I work in a library!