Technically yes, they could reject them. Considering they let my custom chopper get titled without any dot lighting, turn signals, or even any wiring in the bike at all, I feel very good that Oregon won't be a problem.
If I sell car to someone that has stricter licensing requirements, a guy could unbolt these, and put 2 4" dot trailer lights in it's place. Thats why I would put a lens. Then any traces of a swap would be covered by the lens and not change the over all outter shape of the light.
Yup, tinted lens are illegal as written, but you also see alot more production cars using clear housings and red leds (instead of red tinted lens which is how law is written) and factory tinting. As long as you have the correct light intensity, you could argue it.
I have a feeling I won't have a problem getting pulled over for much larger infractions anyways. Haha