I finally have a reference sheet!
(Sadly, no art to go alongside it because I'm out of money once again D: )

Lominloce is a shadow and fire dragon hybrid, inheriting appearance from both sides but abilities only from the latter.

Dragons of her world once faced a great danger and were saved by Sau'ranj, the Wanderer. To remember him, and as a reminder that they must rely on their own strength if another threat arises, they paint their left forelegs in colours contrasting with their scales.

Lominloce has a somewhat special connection to him since, in the time he spent amongst her kind, they had several adventures together and the Wanderer acted as her mentor for a time. When he departed, as he never stays on one world for too long, he awakened Lominloce's powers from the other side of her lineage, granting her control over darkness itself. Though she still has yet to realize the abilities' full potential.

Made by  sinenominex
Go check them out, they're an amazing artist!