From the seller's simulation photo The lenses seem to darken a lot in the sun. You are not. In fact, they are only slightly darker than on the inside and are transparent at the same time. Not particularly impressed with these lenses.
Pros
They make my frame beautiful, I will order more
Cons
Heavy – These interchangeable lenses can add extra weight to the Bose Tempo's frame, which can cause wearer fatigue and discomfort.