I think there could be more than one "company" producing the KO heads, as the one I got actually had lighter skin tone than the authentic HT head and I also heard of some accounts that the KO they got were darker. I got mine from my trusted Ebay seller Kit (iyiyyy). One thing I also noticed is that it's very soft, which I think is a given as it's a recast of a Hot Toys sculpt that's rather soft.
I used mine for this WW2 Logan custom (which I posted on the custom Wolverine thread). It got darker after the blood spatter, some wash for dirt, and "shaving" the mustache. I'll take a close up photo when I'm not as busy.
man that looks sweet !!!
the grenade looks too new btw.