Tinting the windows

[Bogara_ZO]

I'm planning to tint my windows, but I don't know how dark to do it. As my car will be yellow with c/f parts I would prefer a grey (whitch is similar to the c/f) instead of a "death black". Have you got any pics of window tinted bugs?? Maybe they would help me in the decision.
Or I saw some watercooled cars having a bit special tint: starting from the front to the end the windows become darker and darker till they become absolutely black. That could be my other solution....what do you think guys? thnx