here is a shot of orange glow on I just applied to my mosin nagant.
if you hit it with a light similar to sunlight and go into a dim area it will glow like the front sight is cherry hot (in welding terms) for about 2 or 3 minutes. after that the orange is there and does help me find the front sight.
I tried it on the .40 but it wasn't what I wanted so I took it off and used the green. for myself and my intended uses, the orange is better on the rifles. it would seem your intended use the orange would probably work.