Grey is a dominant, masking color, so matter what other genes are present, your horse will look grey!
Rose Grey
Horses that are rose grey are born with a chestnut base colour, then grey as they age.
| Genetic Panel | ||||||
| Extension | Agouti | Grey | Cream/Pearl | Dun | Silver | Champagne |
| e/e | Any | G/g or G/G | Any | Any | Any | Any |
| Shades | |
| Standard Grey | Dapple Rose |
 |  |
| Fleabitten Rose | |
 | |
Plain Grey
Horses that are plain grey are born with a bay base colour, then grey as they age.
| Genetic Panel | ||||||
| Extension | Agouti | Grey | Cream/Pearl | Dun | Silver | Champagne |
| E/e or E/E | A/a or A/A | G/g or G/G | Any | Any | Any | Any |
| Shades | |
| Standard Grey | Medium Grey |
|  |
| Black Points Grey | |
 | |
Steel Grey
Horses that are steel grey are born with a black base colour, then grey as they age.
| Genetic Panel | ||||||
| Extension | Agouti | Grey | Cream/Pearl | Dun | Silver | Champagne |
| E/e or E/E | a/a | G/g or G/G | Any | Any | Any | Any |
| Shades | |
| Standard Grey | Medium Grey |
| |
| Dark Grey | |
 | |