gtk:color-button-new-with-rgba (rgba)

rgba -- a gdk:rgba color to set the current color with

The new gtk:color-button widget.

Creates a new color button with the given RGBA color. This returns a widget in the form of a small button containing a swatch representing the current selected color. When the button is clicked, a color selection dialog will open, allowing the user to select a color. The swatch will be updated to reflect the new color when the user finishes.