Color-Coded Shemitta Guides in Osher Ad, אושר עד

My friend and I were in the Hadar Mall, Talpiyot, Jerusalem yesterday and checked out the new, Osher Ad, אושר עד giant discount  supermarket. Since we didn't have a shopping cart, we just bought an item or two but were impressed with the color-coding of the signs in the fruit and veggie department to easily indicate the origins and shemitta status of the food items.

Arab lettuce, non-Jewish

green/fresh garlic
from chu"l, abroad

dla'at, pumpkin
6th year