For the color concepts, I chose a brown color so that it resembles the underground surface of the dirt and basically other items that the player can find to their advantage.

Another color concept I chose is a black color which resembles caves and the reason is so that players who notices the caves can go in as well cause there can also be better weapons and or items to upgrade your armor and weapons.

Another color that I chose black because it can also show resources and places that you can go too and see if there's any other powerful weapons or items as well.