pub unsafe extern "C" fn gtk_symbolic_color_new_mix(
color1: *mut GtkSymbolicColor,
color2: *mut GtkSymbolicColor,
factor: c_double,
) -> *mut GtkSymbolicColor
pub unsafe extern "C" fn gtk_symbolic_color_new_mix(
color1: *mut GtkSymbolicColor,
color2: *mut GtkSymbolicColor,
factor: c_double,
) -> *mut GtkSymbolicColor