I have to retract my praise for this game and turn it into blame! 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

But pharmacies are labeled with the Swiss national flag, even in the square shape:

I didn’t have the patience to wait for the light to hit that sign. The only thing that’s wrong with this Swiss flag is that the ratio between the cross and the rest is messed up. The cross is slightly oversized. Other than that, stellar job marking the Swiss embassy (and disguising it as a pharmacy, no less!)