I did and it looks good. It would be applied to the inside of the window. But just like 355 said the exsisting factory brown which is made into the glass will alter the color. In my opinion it will still look better than not having it. I think the factory tint is not dark enough to keep prying eyes out. I went with an additional 35% tint all the way around. It lets me see out ok, and keeps nosey out. Jimchadstro said:i have a 88 astro LT... its brown and has that factory brownish tint? I was wondering if you could put black tint over that.