Module color256_theme 

Theme-aware 256-color helpers.

The terminal 256-color palette can be “non-harmonious” on light themes when palette semantics are intentionally flipped for compatibility. In that mode, cube/gray indices need to be reflected to keep visual intent stable.

Functions

adjust_index_for_theme

Adjust an ANSI256 index based on a light/dark theme hint.

rgb_to_ansi256_for_theme

Convert RGB to ANSI256 and apply theme-aware palette adjustment.

set_harmonious_runtime_hint

Store a runtime harmony hint.