Paul Weimer retweeted an interesting picture:
The article he links to is really interesting. It looks how digital colour effects in film have led to the dominance of a “teal and orange” colour scheme that is visually appealing and yet unnatural.
The accompanying Tweet shows how that same colour pairing keeps appearing on movie posters. It’s not universal, for example the Avengers: Endgame uses a lot more purple than teal/blue even though it is of a similar “all the characters at different sizes” style of image. Even so, the visual similarity between the three posters in the tweet is remarkable once you see it — particularly given they are quite different films. A more extreme example, with slightly different tones:
Orange tends to be a bit bigger and the blues a bit smaller. The style usually has orange to the left and blue to the right. I think the basic template is like this:
The colours don’t quite look right as they average between bright highlights and very dark shadows. Also the figures give more shape. Changing all that to some coloured blurry blobs gives me this poster:
Note quite right but closer to the general effect. I’ll keep trying so I can get the style right.