Codex Themes

Separate workflow · Officially documented

Codex CLI themes use .tmTheme files.

CLI syntax themes are not Codex App appearance strings. Keep the formats and installation paths separate.

Official CLI workflow

  1. Run /theme in the Codex CLI.
  2. Preview a theme and save the selection to tui.theme.
  3. For a custom syntax theme, place a .tmTheme file in $CODEX_HOME/themes.
Read official CLI customization docs

Do not mix the formats

Codex App

Appearance colors, fonts, and shared codex-theme-v1 data handled through visible App settings.

Browse App themes

Codex CLI

Syntax highlighting for fenced code and diffs, selected with /theme and extended with .tmTheme.