Something is very off about that shot from the facebook page. In a way I don't doubt it's the original, since there is a difference like the two "holes" in Jabba's skin which seems to have been added in the blu-ray version. But what's off is that in the original, the shadow detail has been desaturated.
This is what it looks like when I've re-saturated those shadows:
This should probably be more like what it would have looked like originally.