How to use the @nivo/bar.BarDefaultProps.colors function in @nivo/bar

},
    },
    {
        key: 'margin',
        help: 'Chart margin.',
        type: 'object',
        required: false,
        controlType: 'margin',
        group: 'Base',
    },
    {
        key: 'colors',
        help: 'Defines color range.',
        type: 'string | Function | string[]',
        required: false,
        defaultValue: defaults.colors,
        controlType: 'ordinalColors',
        group: 'Style',
    },
    {
        key: 'colorBy',
        type: 'string | Function',
        help: 'Property used to determine node color.',
        description: `
            Property to use to determine node color.
            If a function is provided, it will receive
            the current node data and must return
            a string or number which will be passed
            to the color generator.
        `,
        required: false,
        defaultValue: defaults.colorBy,