Too bad its not a hither-to unknown variant - but, I'm picturing a child carefully coloring the white hair with a marker with intense concentration and it does make me smile. Maybe they thought since it was white, it was a paint-your-own mane hair pony? :p
Scenario.
"Mummy, can I have Gusty?"
"What's a Gusty?"
"A my little pony! A white unicorn!"
"But we already bought you a castle with a pony. A white unicorn."
"But Gusty has a red stripe in her hair!"
"You're not having another pony."
"Fine."
(pen comes out. Majesty gets a red stripe in her hair.)
This is too cute
. It also seems that the child tried to cut her a forelock as well.