Quote Originally Posted by wsk View Post
Surely it was not just a purplish fabric that looked different at different places on the stage. The colors would shift if the actress remained in place but merely turned to face a different direction.
It could be some color shift fabric, but just because it happened as she was standing in one place doesn't rule out lights. Changes is the lighting, another actor moving and thus causing/stopping a particular light from striking her. I went with light (I teach film lighting BTW, and have lit several stage productions), since she seemed to be shifting from red to blue (i.e. purple - or actually magenta- is the combination of these two lights). Any of the two primary colors would have lead me to this conclusion (red/green = she was wearing yellow. Blue/green=cyan). Now if she was shifting from blue to yellow, that couldn't just be a lighting effect.

Now having said all that, it probably is a combination of the two (fabric, and light). To just be fabric, the lighting would have to be the same color through out the stage or really weird effects might happen, to be just light, ir probably would not be that noticeable unless it were noticeable on other actors bodies/clothing as well.

Adam