First off, I would also pay extra for colored carts. The only ones I can find for 510's is black. I would like colors just to have them - not just for sorting. I know, I am such a girl. Secondly, I just reorganized my carts and rubberbanded them to the flavor, but that ammo thing is cool. I am such a sucker when it comes to buying new stuff.
My flavors are all just lined up on a counter. I do not have children around and my animals can't get to them. But, should they be in another type of container? Does keeping them in a closed container keep the flavor better?