Leather Horse armour loses dye

Equiping Leather Horse Armour by right clicking on horse loses the dye

What I expected to happen was...:
Horse should've equipped dyed armour

What actually happened was...:
Horse got equipped with plain leather armour

Steps to Reproduce:
1. Craft Leather Horse armour
2. Dye armour by crafting dye with armour in crafting inventory
3. Right clicking with dyed armour on horse