Im sure there are other websites like this, but on the way to work this a,m I heard this one advertise on my local racdio station.
I got ot work and checked it out. You can pick from a huge number of cars/truck, and then change shade and color of tints to see what it will look like on your vehicle (or one very similar)
When the page comes up, you have to click on the tab that says " Get a Visual" ad then follow directions.
I guess it is for Llumar tint which i dont know much about and my vehicles are already tinted, but I thought it was kinda cool for those that arent sure howe dark they want to go, or maybe if their truck would look good with bronze to silver tint.

http://excellenttint.com/index-2.html

 

Good find. Some will find it useful.

 

I have Llumar 15% ceramic tint on my front windows. It is very nice.