Altered beast

i did notice that. Obviously the footage we saw was before some planned post processing. The black goo probably is CGI and moves around.

also the first image have David's hand a bit higher ..so the fluid layer was thinner ( not enough for that drammatic change of colour btw ) .

The international trailer has a lot of post processing, or at least a lot of differences. 1) The canister goo, as seen above. 2) Jumping mohawk guy is on fire in the int trailer, not in any other trailers. 3) In the scene of Shaw dazed and crawling against the wall, she is clearly covered in blood in the int trailer. In all other trailers, it just looks like black or green goo.