So very rarely can I praise a game here, but with Dying Light, we’re in safe territory. While the medkits in the game are not actually shown and their icon is black and white in the inventory, first aid storage cupboards at least use the correct colors on their labels:

No crosses on the first aid cupboards, but the correct combination of green and white

It’s much more fun to struggle for your life against a horde of zombies when you know your first aid equipment is colored properly.