The world consists of more then Fifty Shades of Grey.  Yes, I am referencing the erotic novel by British author E. L. Jamesbook.  Shades of Grey are also very important to the fashion industry.

Austin Reed a men’s fashion retailer in the UK, is currently promoting a wide selection of fashion in various shades of grey.

By the way, if you actually wanted to learn more about the book Fifty Shades of Grey, you can check the authors page at http://www.eljamesauthor.com/books/fifty-shades-of-grey

If you are interested, you can check your color reflex time from the color reflex time tester.