gamma-control

Install command: 
brew install --cask gamma-control

Name: Gamma Control

Per-screen colour adjustments

https://michelf.ca/projects/gamma-control/

Cask JSON API: /api/cask/gamma-control.json

Cask code: gamma-control.rb on GitHub

Current version: 6.3.5

Requirements: macOS >= 10.13

Analytics:

Installs (30 days)
gamma-control 3
Installs (90 days)
gamma-control 10
Installs (365 days)
gamma-control 25