I really love the Coyote color, and I'm considering getting a Coyote A45. But does the Coyote color (or other light colors) show dirt easily? It's always been my accepted wisdom to pick a dark color for a bag, especially one that might sit on the ground from time to time, but Coyote is the color I'm most attracted to. To me, it's "bag" colored (in a good way). Has anyone had any experience with a Coyote color getting really dirty over time, or even better, any experience with the Coyote color looking great over time? Pictures appreciated!