// Holographic projection iris
In each P.O.V shot, there's a subtle halo around the edge of the frame. This represents the operating system built into the Sight lenses that project the holograms over the real world. In the film there are three distinct phases where the iris changes it's appearance:
Blue - The 'vanilla' Sight O.S that everyone has
Green - Sight O.S modified with REFRESH's custom A.I
Yellow - The Parabelle facility's own custom O.S
// Visual language
Each operating system phase has a visual language playbook designed, with it's own distinctive look and personality.
Later, all the shots and games in the film we're designed based on these basic visual components.