### 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
"Please rename your `policy` to `task_policy`.",
                DeprecationWarning,
                stacklevel=2,
            )
            globals()["task_policy"] = globals()["policy"]
            del globals()["policy"]
        log.info("Loaded airflow_local_settings from %s .", airflow_local_settings.__file__)
    except ModuleNotFoundError as e:
        if e.name == "airflow_local_settings":
            log.debug("No airflow_local_settings to import.", exc_info=True)
        else:
            log.critical(
                "Failed to import airflow_local_settings due to a transitive module not found error.",
                exc_info=True,
            )
            raise
    except ImportError:
        log.critical("Failed to import airflow_local_settings.", exc_info=True)
        raise
def initialize():
    """Initialize Airflow with all the settings from this file"""
    configure_vars()
    prepare_syspath()
    import_local_settings()
    global LOGGING_CLASS_PATH
    LOGGING_CLASS_PATH = configure_logging()
    configure_adapters()
    # The webservers import this file from models.py with the default settings.
    configure_orm()
    configure_action_logging()