If they're glass, tint will work. If they're lexan the tint won't stick. You can get new lexan cut that's already tinted, and it's reasonably cheap, but I haven't seen it mirrored. But as far as the mirrored goes, 1. it won't blend into your blind when they're closed, and 2. it'll be more noticeable when they're open. I'd just go with regular tint if it were for my blind.