Hey Dalynou! Yeah this is an issue that occurred with the most recent update where the markings, mane, and leg tufts change to random colors.
What Murther is talking about is this thread right here. (https://feral-heart.com/smf/index.php?topic=66578.0) It's already listed under the known bugs right below the first post, so there is no need to report is again. =) Sorry for the confusion!
Since your questions have been answered, I'll go ahead and lock this up. Thank you everyone for your help! If you have any further questions however, feel free to message me or any other staff member~