After seeing way too many green (reminds me of snot) Greater Demons of Nurgle, I wanted to create a look that was more like pus (you know, the look od disease and decay).
nice Idea... but if I had chosen that color (interesting, btw), I might have thought about Glazing him in yellow afterwards... some "slipperiness" added then.
Heh, a big Nurgle... if I ever grab one in a deal, it is going to be RED... like a rottin' Killer Tomato! ;)