Normally when you mix red and green you get some shade of brown. However, if you throw blood-red paint and a dehydrated goblin together you get Hemogoblin.

Hemogoblin is a zenishift that shows up as rusty iron-like oxidized heme over white. Over black, it is a very, dark color that any greenskin would be proud to wear. This is certainly an unusual pairing, begging to be used on something that goes bump in the night.

Note: The bottle photo illustrates the change in color for Hemogoblin from top (white) to bottom (black).