I need some examples or suggestions for window tint % on my classic silver tC.

We have a thread for that...

http://www.scionlife.com/forums/viewtopic.php?t=112963

There are also these other threads in the pictures sticky:
http://www.scionlife.com/forums/viewtopic.php?t=101973

And I'm sure you could also come up with quite a few examples from a search that may or may not be in that first thread.