Feature request: customizable UI accent colors

Feature Request

Allow users to customize Claude Code's UI accent colors (e.g. the periwinkle/blue dots, prompt indicators, and orange header text) via a configuration file or settings.

Motivation

I've customized my terminal (Ghostty) with a specific accent color (#E8255A) for cursor, selection, etc., but Claude Code's hardcoded periwinkle and orange UI elements clash with my theme. There's currently no way to override these colors.

Proposed Solution

Add a color/theme configuration option — for example in ~/.claude/settings.json or a dedicated ~/.claude/theme.json — that lets users override specific UI colors:

• Primary accent (currently periwinkle) — used for dots, prompt indicator, etc.
• Secondary accent (currently orange) — used for headers like "Recent activity", "What's new"
• Any other hardcoded UI colors

Alternatives Considered

• Terminal-level ANSI color remapping: too broad, affects all terminal output not just Claude Code
• No workaround currently exists for changing these specific UI elements