Black High contrast accessibility Windows basic has a total effect on every 3D elements, background, Windows, Palette title, menus etc, so why doesn't any customised dark Aero themes I have downloaded from here and deviant Art?

What's preventing any of these Aero themes manipulating other programmes like Windows live mail GUI's?

Looking at it another way because black high contrast Basic theme does such an excellent on joball the elements is there any way that a applications such as "black glass.exe" or " full glass" be made to work in non--Aero high contrast Accessability themes?

Any help is appreciated as I would like to know before I start attempting to learn how to create my own themes in Windows style builder to us not to waste time if I'm barking up the wrong tree looking for a positive answer to this question.

Cheers