This section describes how to change the fills and borders of chart elements.
In the above example:
- A border is drawn around the series area with a corner radius and no padding.
 - A border, fill and corner radius are applied to the Legend, with padding between the border and items provided as a single number.
 - A border, fill and corner radius are applied to the series labels and axis labels with padding defined for each of the top, right, bottom and left.
 - An item styler is used to override the styling of series labels for names starting with the letter 'D' and 'E'.
 
 Fills Copy Link  
{
    label: {
        color: '#333', //font colour
        fill: '#badaff', // fill colour
        fillOpacity: 0.8,
    },
}
See Series Fills for details of the available fills types, including patterns and gradients.
 Borders Copy Link  
{
    border: {
        enabled: true,
        stroke: '#2c79d5',
        strokeWidth: 1,
    },
}
 Padding Copy Link  
Padding can be defined as a single number to be applied to all sides of the element, or as an object with values for top, right, bottom and left.
{
    padding: 4, //padding of 4px on all sides
}
{
    padding: {
        top: 4,
        right: 6,
        bottom: 2,
        left: 6,
    },
}
 Item Styler Copy Link  
Individual axis and series labels can be customised using a Styler callback.
itemStyler: (params) => {
    if (params.datum.name.startsWith('D')) {
        return {
            /* ... */
            fill: {
                type: 'gradient',
                rotation: 90,
                colorStops: [{ color: '#c56600', stop: 0 }, { color: '#fb9323' }],
            },
        };
    }
}