OP here. This old thread looks to have been trending for the past couple days. Ended up taking delivery in late October and went 25% on the fronts. It's a near perfect. Of course sometimes it looks lighter because of the windshield, which some over compensate by going with 20% (20% x 85% stock = 17%, and darker than factory rear at 22%). Glad I didnt go 20% because my town is super dark at night with these weak gas lamps in lieu of electric street lights. 25% was just right.