Is there a theme for any desktop environment that has a close button extending to the very edge of the titlebar?

I am looking for a theme that has a big clickable area, about 40x40 pixels for the close button and there is no additional space below/above/aside the close button on the title bar.

This is something that would presumably help many people but I haven't found such a theme yet.

I can rule out openbox-3 themes because on that WM there is always a 1 px border around title bar buttons.