### Apache Airflow version

2.2.0b1 (beta snapshot)

### Operating System

Mac OSX 11.5.2

### Versions of Apache Airflow Providers

_No response_

### Deployment

Docker-Compose

### Deployment details

_No response_

### What happened

In the tree view, the status color for deferred is very difficult to distinguish from up_for_reschedule and is generally not very distinct. I can’t imagine it’s good for people with colorblindness either.

### What you expected to happen

I expect the status colors to form a distinct palette. While there is already some crowding in the greens, I don't want to see it get worse with the new status.

### How to reproduce

Make a deferred task and view in tree view.

### Anything else

I might suggest something in the purple range like [BlueViolet #8A2BE2](https://www.color-hex.com/color/8a2be2)


### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

airflow/settings.py
"""Validate ORM Session"""
    worker_precheck = conf.getboolean('celery', 'worker_precheck', fallback=False)
    if not worker_precheck:
        return True
    else:
        check_session = sessionmaker(bind=engine)
        session = check_session()
        try:
            session.execute("select 1")
            conn_status = True
        except exc.DBAPIError as err:
            log.error(err)
            conn_status = False
        session.close()
        return conn_status
def configure_action_logging():