Racing stripe size/ color, and any other suggestions for mods.

I have an 08' grey (dark titanium metallic) Charger that I want to add a set of racing stripes to. I'm pretty set on dual buy can't decide on color or size, I'm thinking 12" with a 2 1/2" gap to fit in the sides of the hood and trunk emblems. I just got done doing the front wheels with black plastic dip and the front calipers in red yesterday and am going to do the rear today. I would love some suggestions on size, color, and any other mods for a beginner looking to DIY with some being father son projects. It's an 08' 3.5L, it has a Flowmaster Super 10 with a reso delete already.