Specifies the font settings of the group labels.
Colors the text displayed by the group labels.
This option supports the following colors:
- Hexadecimal colors
- RGB colors
- RGBA colors
- Predefined/cross-browser color names
- Predefined SVG colors
Specifies the font family of the text displayed by the group labels.
For details on acceptable values, refer to the Font Family article.
Specifies how transparent the text displayed by the group labels should be.
This option accepts a value from 0 to 1, where 0 makes the text completely transparent, and 1 makes it opaque.
Specifies the size of the group labels' text.
Specifies the font weight of the text displayed by the group labels. Accepts values from 100 to 900 in increments of 100. Higher values increase boldness.