Problem

The ui.seamColor setting in openclaw.json has no visible effect on the web UI. Every accent color (buttons, sidebar highlights, selection states, focus rings) stays hardcoded red regardless of what value is configured.

Evidence

The backend correctly:

• Validates ui.seamColor in the Zod/TypeBox schema (src/config/zod-schema.ts, src/gateway/protocol/schema/channels.ts)
• Exposes it via talk.config WebSocket response (src/gateway/server-methods/talk.ts:216-218)

But the frontend:

• Never calls or handles the talk.config WebSocket method
• Has no code that reads ui.seamColor from the config snapshot
• The /__openclaw/control-ui-config.json bootstrap endpoint does not include seamColor

The CSS uses --accent and related custom properties (e.g. --accent-hover, --accent-subtle, --ring, --primary) that are all hardcoded in the theme CSS files (ui/src/styles/base.css).

Expected behavior

Setting ui.seamColor to any valid hex color (e.g. "#00846F") should update the accent color of buttons, sidebar navigation highlights, selection states, and focus rings throughout the UI.

Actual behavior

All UI elements remain the default red (#ff5c5c in dark mode). The config setting is silently ignored.

Steps to reproduce

1. Add "ui": { "seamColor": "#00846F" } to ~/.openclaw/openclaw.json
2. Restart the gateway
3. Open the web UI — all accents remain red

Environment

• OpenClaw web UI (control-ui)
• All themes affected (claw/knot/dash, light/dark)