[FEATURE] Orange Claude Robot art changes color with agent-color

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Today:
When a claude session spins up a new agent team in tmux panes, it passes --agent-color XXX to the subagent. For each sub agent spun up there is a different color passed.
The claude subagent then loads, displays the welcome message with the Claude Robot art and version info. and then proceeds with directions.

Sadly, The Claude robot art is always orange. --agent-color only seems to have a small impact on the team-leader styling when coordinating tasks

<img width="616" height="129" alt="Image" src="https://github.com/user-attachments/assets/59aac3f8-6b59-4f24-9116-1b79e1683427" />

Proposed Solution

Proposal
Welcome message should honor --agent-color=XXX and change the color of the Claude Robot Art. By default it seems the color of the robot is always orange, but it could change with the agent color.

Why
A.) Fun and user delight
B.) Slightly better visibility and clarity when working with multiple agents

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

CLI commands and flags

Use Case Example

Multi-agent teams running in tmux

Additional Context

Using claude Code v2.1.71 on MacOS.
Zsh for prompts
I primarily use Iterm2 - however can replicate this behavior in normal mac terminal.
Also have verified that it is not affected by terminal profile color scheme