My collection one has the more blue-ish green that matches her body colour, but my rehaired one that has since moved along, had that colour, but her rehaired sections were the greener shade, like your pony's tail. So they either fade to that blue/green (sea nymph?) from the greener colour (lucky clover?) (yellow tones do fade faster than blue-ish ones) or there was a factory error, and both a sea nymph and a lucky clover version exists.