How do you set the glass blend colour on Windows 10?
Using the undocumented SetWindowCompositionAttribute API on Windows 10, it's possible to enable glass for a window. The glass is white or clear, as seen in this screenshot: However, the Windows 10 Start menu and the notification center, which both also uses glass, both blend with the accent colour, like so: How does it do it? Investigations The accent colour in the following examples is a light purple - here's a screenshot from the Settings app: The AccentPolicy structure defined in this example code has accent state, flags and gradient color fields: AccentPolicy = packed record AccentState: