system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a reason a greenscreen has to be green? Can other colours be used?
gpt
Any color can be used, however bright green is often used because it's a color that doesn't appear commonly in clothes or in the human body, making it easier to separate out the background and things in front of it. If you try to, for example, use white you rule out white clothing which is common, because the software wouldn't be able to distinguish between the clothes and background, or the whites of your eyes for example. It's a color that usually contrasts well with things you want to film, but other than that it isn't special.