Gtk.SymbolicColor.new_alpha

function new_alpha(color:Gtk.SymbolicColor, factor:Number):Gtk.SymbolicColor {
    // Gjs wrapper for gtk_symbolic_color_new_alpha()
}

Creates a symbolic color by modifying the relative alpha value of color. A factor < 1.0 would resolve to a more transparent color, while > 1.0 would resolve to a more opaque color.

Since 3.0