Hi there. I'm still in Win7 here, so the app doesn't apply to me yet, but I'm posting for a little rant, and a question. I love the blur since Vista, and have always hated the glass stripes over it. As a programmer, I was waiting for a version of Windows that'd allow to enable *just the blur* & not the stripes. I know that in Win7 it's possible through the registry or the undocumented DwmSetColorizationParameters, alas not per-window. So I was hoping that in Win8 it'd be improved.. NOT REMOVED! I thought that the whole "aero is gone" was a joke, it actually mostly was, except for the blur, sadly. I don't even understand, because blur goes well with a flat look. & it's not even just eye candy, it helps roughly knowing what's behind windows when you focus enough, while still keeping things readable. Anyway, question to a programmer: is it even technically possible to hack (in Win7 or Vista) the colorization parameters *per window*? Since you've digged deeply in the DWM, maybe you know? I don't think that it's a technical limitation, since blur has to be applied per-window anyway. Also, do you think the occlusion problem you have is fixable? I'm actually working on a GUI system, purely private to a window, so, within my own painting surface it would normally be easy to implement my own blur, not over the Windows desktop obviously, but at least over my own GUI. But I'm facing the same occlusion problem, a control requiring a blur would require a large area present around it, & the window invalidation process can grow pretty complex & inefficient (maybe that's why M$ removed the blur?). Thanks