Not only do they offer an amazing array of colo(u)rs based on samples from as far back as 1773 when they opened, but they also produce a line of wallpapers inspired by historic London homes. My favo(u)rite, of course, is "Great Ormond St." circa 1890.
Now, I know you ladies are not as "Ye Olde" as I tend to be, but don't despair. They also have a "Catwalk" line of paints taken from the fabrics seen on the runways of Milan and Paris this season.
To top it off, every can purchased means a direct donation to English Heritage ensuring that the sites that inspired their collection will be preserved for future generations. I am a smitten kitten.