The ultra-dramatic back-shot, for the lonely hero and probably vigilante.
The enormous, looming eye is mostly for horror films.
Movie posters about animals tend to be sapphire. There’s also all that thin, white text in capital letters.
The blindfolded hero must face justice.
The Classic Standing Back to Back
A silhouette in front of the ocean, with faces floating in the clouds, all in pastel colors!
To signify that your movie is a “big independent film,” go for a super-saturated golden yellow.