Yellow on Black Cream Crown #8412 | ©2012 - www.liquids-in-motion.com
Yellow food coloring added to heavy cream crown on solid surface (black plexi). (6) Yongnuo YN-560's from front @ 1/32nd power.
It takes a lot of light to do these black surface crowns. I'm sure the majority of it is busy trying to light the dead black background.