feat: adds color to help

[amir20]

No description provided.

[claude]

Code Review

This PR adds colored output to the CLI help text by enabling clap's color feature and customizing the help styles. Overall, the implementation is clean and follows good practices.

✅ Strengths

• Clean implementation: The get_styles() function is well-structured and easy to understand
• Sensible color choices: Green for headers/valid, red for errors, cyan for usage, etc.
• Non-breaking change: This is purely additive and doesn't affect existing functionality
• Minimal dependency impact: The color feature is part of clap, so no new dependencies

🔍 Observations

1. Color detection: The color feature in clap respects NO_COLOR and CLICOLOR environment variables automatically, so this will gracefully degrade in non-color terminals ✅

2. Consistency with UI colors: The help colors (green/cyan/red) differ from the app's UI color scheme (green/yellow/red for metrics), but this is acceptable since they serve different purposes

3. Function placement: The get_styles() function is defined at module level in main.rs. This is fine given it's only used once, but could be moved into a cli module if more CLI styling is added in the future

📝 Minor Suggestion (optional)

Consider adding a brief doc comment explaining that colors auto-disable in non-TTY contexts:

/// Returns custom styles for CLI help output.
/// Colors automatically disable when stdout is not a TTY or when NO_COLOR is set.
fn get_styles() -> Styles {

✅ Verdict

Approved - This is a good quality-of-life improvement with no issues. The code is well-written and the feature enhances the CLI experience.

[github-actions]

Docker Image Built Successfully

docker pull ghcr.io/amir20/dtop:pr-173