Well for mirrored in the daylight, I prefer the black iridium lens, but with only an 18% light transmission, at night you can't see much.
The black iridium is awesome when its bright, and I use the H.I. Yellow lens for night time and its great. It's not mirrored, but is great at night and in low contrast conditions.
I dont really know if oakley (or anyone for that matter) makes a type of lens that youre looking for (mirrored in daylight but still be able to use at night / mirrored lens for low light and night).
Perhaps Pink Iridium would be your best bet? My girlfriend has pink iridium lenses on her stockholms and she wears those at day and night. theyre not 100% mirrored, but like maybe 40% mirrored.
hope this helps bro
take care

the black iridium lenses are sick for sunny days as well as stormy overcast days. i have not used them at night yet tho

Thanks. I have a pair of A-frames and I'm pretty sure the lenses I have now are black iridium. They get pretty close to mirrored when its bright out but they're also pretty visible at night if there's good lighting. So the H.I. Yellow lens is more of a night time lens? And what about the G30 lens? Sorry for all the questions, just not to familiar with lens types.

Hey.
yea the hi yellow is awesome for low contrast, low light and night time. It has a 81% light transmission so it lets in a fairly large amount of light.
i think the g30 is only around like 30% so the HI yellow would be better for night.
H.I. Yellow or clear are the way to go for night.
hope this helps

thanks yeah that helps alot. I think i'll try to pick up a H.I. yellow lens for night. Im probably gonna get the canada colorway, does anybody know if the black iridium would look good with these? or would that just look weird?