The lenses are blue on outside. What color is the inside of the lease?

It depends. I have 2 pair: the crystal blue ones and the electric green ones. The lenses of the crystal blue pair are blue on the inside; the green pair is brown on the inside.

The Ultra-violet glasses are not. The Swank colors that have polarized lenses are Satin Crystal Brown, Blue Confetti, Satin Clear, Satin Black, Satin Crystal Teal, Distressed Bronze and Yellow Confetti.

What is the color of the lens behind the mirrored coating and are they polarized?

It depends on the version of Swank that you are ordering. The Blue lens is smoke base and is not polarized but we do offer polarized options of the Swank. here is an example, https://www.amazon.com/Tifosi-TF1500505355-Swank-Sunglasses/dp/B07DDMJ13T/ref=sr_1_5?dchild=1&keywords=Tifosi+Swank+polarized&qid=1587484205&sr=8-5