Support for Theme Atlas

[Hadden89]

Describe the solution you'd like

It was a great feature present in glass8 which allowed to change the titlebar buttons without relying on an external theme.

Your reason (tell us why we need it)

This allowed to harmonize the appearance of the buttons within different apps (for example explorer or others)

Describe alternatives you've considered

I played with settings but didn't manage to have a consistent layout, with an atlas file it might be possible (win8 atlas below as reference):

Thanks for the tool, though =)

[TheInsane101]

I think you mean glass8, not aero8, as the name of the preview Aero program.

[Hadden89]

yeah, correct. Fixed that. Tnx.