change UIAlertcontroller background Color

Question

Ok so I have this alert that I am using and I want the background of it to be black not grey like it is. I have managed to change the colour of the text for the title and the me

Answer 1

Due to a known bug (https://openradar.appspot.com/22209332), the accepted solution doesn't work on iOS 9.

See my full answer here: https://stackoverflow.com/a/37737212/1781087