While Not Brave Enough to Post in Use, Took Some Advice From Here and Got a M/M Austin in a Drop. He is a New Favorite and Was Almost Able to Take the Knot! Now to Find a S/M One for My Fiancee to Peg me With.
For those wondering for upcoming customs: four-color custom marbles are not available at this time, and any color not in the color picker can be attempted!