Thanks guys...manager_tsi, the front emblems are covered with a matte tint, sdtint did it for me. The rear hatch emblem I did myself with plasti-dip. Also, you can check out tmtuning.com, they have some rear hatch emblems in a couple different finishes.
Hmm, for me, the darker the better. But...I didn't want to constantly attract the cops which is why I went with 20. That said, if you think you can get away with 15%, then go with that.