# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# colors

An array containing the default colors for the chart's series. When all colors are used, new colors are pulled from the start again.

Default colors can also be set on a series or series.type basis, see column.colors, pie.colors.

In styled mode, the colors option doesn't exist. Instead, colors are defined in CSS and applied either through series or point class names, or through the chart.colorCount option.

The defaults from v13 invoke CSS variables that are set by the `palette` option's light and dark themes.