I am trying to change the grey color in the overlay in the alert box but I cannot find where this is set anyone know where and if this can be changed?
Customizing the overlay behind the Alert involves setting a custom PopUpManager.popUpManagerFactory.
Alert
PopUpManager.popUpManagerFactory
Your custom function could return a new DefaultPopUpManager with a custom overlayFactory.
DefaultPopUpManager
overlayFactory
Something like this:
PopUpManager.popUpManagerFactory = () -> { var manager = new DefaultPopUpManager(); manager.overlayFactory = () => { // create and return an overlay here }; return manager; };