I own a 2008 Lexus is250, obsidian black with a beige interior (not exactly sure the name of the interior). When I bought my car 2 years ago I didn't really know what I was doing, I regret getting it black with a beige interior. I am saving up so some day I can trade it in for a starfire pearl is250 with a black interior. I dislike how you can see the beige in my car, I got it tinted 35% all around a few months after I bought it but now I want to go darker. I realized if I went darker on my tint the interior wouldn't show as much, the back window is the worst because (I am not sure exactly what it is called) the part directly under the back window shows the beige a lot since its such a big window and the beige is really close to the window. Can someone recommend me how dark I should go on my tint so it still looks good, but hides the beige interior as much as possible?