ThemeColors

Accent for headings, borders, links, and active elements.

Secondary accent for badges, labels, and decorative highlights.

Attention-drawing contrast accent, distinct from primary/secondary.

Differentiated section background (above surface).

Positive outcomes — tool success, approved actions.

Caution and notice states — pending tool calls, notices.

Error and destructive-action indicator.

De-emphasized text — timestamps, secondary labels.

Shell mode indicator — borders, prompts, and message prefixes.

Command mode indicator — borders, prompts, and message prefixes.

Skill invocation accent — border and header text.

Skill invocation hover — contrasting variant for interactive feedback.

Tool call accent — border and header text.

Tool call hover — contrasting variant for interactive feedback.

Primary body text.

Base application background.

Elevated card / panel background.

Create a new ThemeColors by overlaying overrides onto a base.

Fields present in overrides replace the corresponding base value; missing fields inherit from base. This lets users specify only the colors they want to customize.