E. L. James's Fifty Shades of Grey has become the fastest-selling paperback of all time.
And to celebrate the runaway success of James's erotic novel, we've compiled a list of all the car colours in the (monochrome) rainbow. It's amazing just how many names car designers can give the colour grey...
1. Aston Martin - 510 Alloy
2. Porsche - Agate Grey Metallic
3. Citroen - Arctic Steel
4. Ferrari - Argento Nurburgring
5. Maserati - Bianco Fuji
6. BMW - Black Sapphire
7. FERRARI - CANNA DI FUCILE
8. Aston Martin - Chainmail Grey
9. Rover - Charcoal
10. Volvo - Cosmic White Metallic
11. Peugeot - Cossack Grey
12. Audi - Dakota Grey
13. Volvo - Dark Grey
14. AUDI - DAYTONA GREY
15. Toyota - Decuma Grey
16. Aston Martin - Double Apex
17. Ford - Dove Grey
18. Fiat - Electroclash Grey
19. Aston Martin - Flint
20. Peugeot - Graphite Grey
21. Maserati - Grigio Granito 
22. Ferrari - Grigio Silverstone
23. Aston Martin - Gun Metal
24. Nissan - Gun Metallic
25. Bentley - Hallmark
26. Aston Martin - Hammerhead Silver
27. Land Rover - Havana
28. Rover - Hurricane Grey
29. Volvo - Inscription Electric Silver coarse flake Metallic
30. LAND ROVER - IPANEMA SAND
31. Audi - Lava Grey
32. Ford - Levante Grey
33. Bentley - Light Tudor Grey
34. Aston Martin - Matrix Alloy
35. Renault - Mercury Grey
36. Mazda - Metropolitan Grey Mica
37. Vauxhall - Mistral Grey
38. BENTLEY - MOONBEAM
39. BMW - Moonstone
40. Citroen - Quartz
41. Ford - Sea Grey
42. Volvo - Seashell Metallic
43. Vauxhall - Smoke Grey
44. BMW - Space Grey
45. Peugeot - Steel Grey
46. McLaren - Supernova Silver
47. Aston Martin - Tailor's Grey
48. Rover - Tempest Grey
49. MERCEDES - TENORITE GREY
50. Aston Martin - Weave Alloy
