---
# claudbg-6gx6
title: 'TUI: color toggle with ''c'' key'
status: completed
type: task
priority: normal
created_at: 2026-03-31T00:33:01Z
updated_at: 2026-03-31T04:32:25Z
parent: claudbg-qpfe
---

In the TUI, pressing `c` toggles color coding on/off globally (affects all transcript views). Color is on by default unless NO_COLOR is set. The toggle state persists for the duration of the TUI session.

## Summary of Changes

Added a global color toggle to the TUI, activated with the `c` key:

- **`src/tui/state.rs`**: Added `color_enabled: bool` field to `AppState`. Initialised in `AppState::new()` by checking the `NO_COLOR` env var (false if set and non-empty, true otherwise). Added tests for both cases.
- **`src/tui/run.rs`**: Added `KeyCode::Char('c')` to the global event fallback handler to toggle `state.color_enabled`. Added a test for the toggle.
- **`src/tui/screens/transcript.rs`**: Updated `build_chat_lines` to accept a `color_enabled: bool` parameter and conditionally apply ratatui `Style` colours to role labels (orange for assistant, grey for user), tool-use lines (cyan), tool-result lines (green/red), and image lines (yellow). When `color_enabled` is false, all spans use `Style::default()`. Updated the call site in `render_transcript` to pass `state.color_enabled`. Updated all test calls to pass `false`.
- **`src/tui/modals/help_modal.rs`**: Added `c  toggle color` line to `HELP_TEXT` and bumped `DIALOG_HEIGHT` from 14 to 15 to accommodate it.