I'm pretty sure a lot of you know what this is, if not, here's a pic:

What i'd like help on is what the differences are between the tints. I see blue, purple, and chrome tinted. I need one suitable for use in a car with very dark tint. Can anyone help? Thanks.

 

Ive had this mirror in all the cars Ive had and I will always use them. The blue tint one cuts down the glare alot, but I find it harder to see at night sometimes. Since your windows are tinted, I would stick with the chrome.