no you dont tint the inside, you tint the outside to give it the dark appearance, but the light still shines through.
I've never seen anyone tint the inside.. you would have to take apart the housing and some you cant do that unless you heated up in the oven.
Yes, i just installed them, uploading pictures.
I think they do look pretty good. I wasnt going for too dark, I still got half can of spray left. I got it off ebay for $12