This is a simple way to update an old boring mirror. It's blue that fades into a touch of yellow into the orignal white of the mirror.
* Start with the middle color first (yellow) and use lots of white paint to fade it into the orignal white as well as into the blue.
* For better fading wait for the paint to dry about a minute, then lightly brush a clean paintbrush to combine the colors; it will look less streaky.
* Enjoy the imperfections because this could be a never ending project! :)