50 shades of grey

1. Cadet Gray
2. Carbon Gray
3. Castor Gray
4. Cinereous
5. Clear Blue-Green Gray
6. Court Gray
7. Dawn Gray
8. Drab-Gray
9. French Gray
10. Glaucous-Gray
11. Dark Glaucous-Gray
12. Deep Glaucous-Gray
13. Gull Gray
14. Light Gull Gray
15. Hathi Gray
16. Heliotrope-Gray
17. Dark Heliotrope Slate
18. Iron Gray
19. Lavender-Gray
20. Lilac-Gray
21. Mineral Gray
22. Mouse Gray
23. Blackish Mouse Gray
24. Neutral Gray
25. Dusky Neutral Gray
26. Olive-Gray
27. Payne's Gray
28. Light Payne's Gray
29. Pale Payne's Gray
30. Pearl Gray
31. Plumbeous
32. Blackish Plumbeous
33. Plumbeous-Black
34. Dark Plumbeous
35. Plumbago Gray
36. Dark Plumbago Gray
37. Puritan Gray
38. Purplish Gray
39. Pallid Purplish Gray
40. Sky Gray
41. Slate Color
42. Slate-Gray
43. Slate-Black
44. Blackish Slate
45. Smoke Gray
46. Storm Gray
47. Varley's Gray
48. Vinaceous-Gray
49. Deep Vinaceous-Gray
50. Violet-Gray