So far, this pony seems to be completely exclusive to the IDWW comics. Violette Rainbow has been tweeted out by IDW showing off a livedraw of her, celebrating the character for World Vitilgo Day.
You can find the tweet embedded below!
Direct Link
Meet Violette Rainbow! A very special filly whose spots make her sparkle shine brighter. We celebrate everypony's differences, but especially on #WorldVitiligoDay, Violette makes her debut in My Little Pony #14, out on July 5th! #mlp, #mylittlepony pic.twitter.com/Z6QOOKpCx5
— IDW Publishing (@IDWPublishing) June 25, 2023