Hi, here is a link that may or may not assist you with this
Hi Lad, this is Peggy. Yes you can paint your toilet and here are some instructions I hope will help you get the job done. Good luck with your project. Painting a Toilet - Ask the Builder
AsktheBuilder.com: Painting a toilet can be done. Use oil paint on toilets, except inside the toilet bowl. Painted toilets can even match your wallpaper.