A global minor mode that warms all Emacs colors for nighttime coding.
Reduces blue light and slightly dims colors across all faces, working
with any theme.

Usage:
  M-x warm-mode

Customization:
  `warm-mode-warmth'  - intensity of warm shift (0.0 to 0.5)
  `warm-mode-dim'     - brightness multiplier (0.5 to 1.0)