Flaxen is a non-testable gene that has not had its inheritance identified yet. It only affects chestnut horses, causing the mane to become a flax to light cream colour.
| Patterns | |
| Classic Flaxen | Light Flaxen |
 |  |
Flaxen is a non-testable gene that has not had its inheritance identified yet. It only affects chestnut horses, causing the mane to become a flax to light cream colour.
| Patterns | |
| Classic Flaxen | Light Flaxen |
| |