To be honest with you, i think they look darker during the day lol. I just went out and looked at mine (9:20pm) at i could see in. I turned the dome light on and it was easy to see in. I have yet to drive at night with them.I'm going to go this weekend and get it done too. Probably do 35% on the fronts and 20% on the rear windows. i'm just concerned that 20% might be too dark at night and a safety issue when it's raining or snowing and you're trying to change lanes.