Remove gradient in window boaders from aero theme

Hi,
I recently figured out how to remove aero strips from taskbar and window title bars but still there is some kind of grayish gradient around the top corners which feels so unsatisfying. I want to have a solid black consistent color all over the title bar. Is it possible without editing system files or installing 3rd party themes? I managed to remove aero strips by easily tweaking a key in the registry :)
Please help. Thank you.





*Edit* I just realize the gradient is gone when the window is not active. Is there any way to disable that effect too? I mean even though window is currently not active, but titlebar remains the same as active window?

As far as I know the only way to do it is to edit the .msstyles.

Jerry