In the movie the Alien keeps ripping off people's heads to replace his own head that had exploded in the early part of the film, but It is only the head he takes, which he puts on his own body, which is white skinned, at one point he takes the head of a homeless person named Julius played by African American actor Antonio Fargas, and now all of a sudden the body is that of an African American, no longer white.
At 1:20:44 You can see Briefly but clear a Crew Member who is wearing the creature gloves.
When the band are watching their video on TV, the boom mic is visible.