Today is a exciting day, as I am introducing the Horn stripe gene!
What is this lovely gene?
It will, as the name states, add stripes of color to horns and hooves.
Now it can't just be any two colors!
If you have, say, a red horned-EB, the striped will be a shade of lighter red.
I'm going to use

See how his are red with a lighter shade? Exactly like that.
Here's another example using my Gladiator:

Everybody getting the idea
Alrighty!
The striping is an Uncommon trait meaning it adds +2 rarity.
The gene is labeled as nHs/HsHs, so Gladiator's new genotype would be EE/aa/nZ/nT/nLp/HsHs.
Enjoys!