It is suitable widget for selecting a color in a preference dialog.
CSS nodes
colorbutton
╰── button.color
╰── [content]
gtk.color_button.ColorButton has a single CSS node with name colorbutton which
contains a button node. To differentiate it from a plain gtk.button.Button,
it gets the .color style class.
The gtk.color_button.ColorButton allows to open a color chooser dialog to change the color.
It is suitable widget for selecting a color in a preference dialog.
CSS nodes
gtk.color_button.ColorButton has a single CSS node with name colorbutton which contains a button node. To differentiate it from a plain gtk.button.Button, it gets the .color style class.