How can I make the title (and tab) bar of iTerm 2 exactly the same color as the terminal background so that it's impossible to tell where one starts and the other begins?
How it is at the moment:
What I'd like it to be:
Sorry I don't really know for sure, but there is no option for that I know of. As a last resort you could edit the source code for the interface, you could fork there.
If you wanted you can check the advanced tab in the preferences, but i don't think you'll be successful there.