⚠️ Deprecated ⚠️

This is deprecated since version 4.10.

Use class@Gtk.ColorDialog and class@Gtk.ColorDialogButton instead of widgets implementing GtkColorChooser

Whether colors may have alpha (translucency).

When ::use-alpha is false, the GdkRGBA struct obtained via the property@Gtk.ColorChooser:rgba property will be forced to have alpha == 1.

Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern).