My old ref sheet was super outdated, and I was tired of referring people to other random images.
I've made a couple (potential) updates to Voltaire's design:
The rest of his markings are still pretty basic - the tip of his tail, insides of his ears, and his paws are black. Another patch of black starts at his chin and stretches down his belly, stopping just above his waist. (Admittedly, I positioned that left paw rather poorly for a ref sheet.)
Fun fact, most of Voltaire's personality is based on my own, but his birthday is based on the date I first designed him.