Specifies the appearance of groups in the hover state.
When the user pauses on a group, this element responds by changing its style. Using the fields of the hoverStyle object, you can specify the color of group headers and appearance of group borders in the hover state.
- hoverEnabled - enables/disables the hover feature.
Colors the group headers in the hover state.
This option supports the following colors.
- Hexadecimal colors
- RGB colors
- RGBA colors
- Predefined/cross-browser color names
- Predefined SVG colors