Whiskey, try Brownell's number 601-505-253 for the orange Millet.
I just put a Ruger RFS on my GP. It has red plastic molded into a dovetail on a steel sight. It's similar to the S&W, but the red goes all the way to the top of the sight ramp. Can't compare to the Millet, tho, haven't seen one.
Good shootin!