# JS API Reference

# Welcome to the Highcharts JS 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.

# plotOptions.polygon.colorIndex

Styled mode only. A specific color index to use for the series, so its graphic representations are given the class name `highcharts-color-{n}`.