7th Doctor Covers

            "All you can see are three colours Brigadier.
           Gay, Straight, Bi.  Red, Blue, Yellow.
           The higher evolved beings of the cosmos have gone
           long beyond such limited palettes.  They can paint
           in all the colours of the rainbow and into the 
           ultra-violet.  Where I come from Brigadier, we have
           sex in colours that don't even exist."
                      - 7th Doctor, "Battlefield: Earth"