Add support for vibrancy - this might need changes to Electron as it would have to get background information about content behind the window and pass the data to the web app, that can then render a blurred version of the content as the background.
More information: https://developer.apple.com/library/mac/documentation/Foundation/Reference/NSVisualEffectView_Class/
Changes have been made. 😄
Nice! Since Electron has support for vibrancy now, CSS tweaks can be made to Photon now to ensure the UI looks good with vibrancy enabled.