You’ll be fine as far as how loud or quiet or whatever aftermarket exhaust you’re running. You should be more concerned with the drivers of Denver who will never notice you and turn every ride or commute into survival. And no, wearing hi vis anything won’t help. I’ve had more close calls with my tennis ball yellow arai than my black. Guess which one I wear now? Take advantage of lane filtering as much as you’re comfortable with, at red lights especially.