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