Module diff_theme 

Diff theme configuration and color palettes

Provides terminal-adaptive styling that adjusts background tints based on:

1. DiffTheme (Dark/Light) — detected from terminal background
2. DiffColorLevel (TrueColor/Ansi256/Ansi16) — from terminal capability

Colors are selected for WCAG AA accessibility contrast ratios (4.5:1 minimum).

Enums

DiffColorLevel

Terminal color capability level for palette selection.

DiffTheme

Terminal background theme for diff rendering.

Functions

diff_add_bg

Get background color for addition lines based on theme and color level.

diff_del_bg

Get background color for deletion lines based on theme and color level.

diff_gutter_bg_add_light

Get gutter background color for addition lines in light theme.

diff_gutter_bg_del_light

Get gutter background color for deletion lines in light theme.

diff_gutter_fg_light

Get gutter foreground color for light theme (dark theme uses dimmed default).