tropic tulip
When roaming around the map, it is difficult to differentiate between Dynamite and Utility boxes without getting right on top of them as they are both colored red. Using the color red for dynamite makes logical sense and suggest changing the Utility boxes to another color such as purple to stand out from the other colors used for Energite and ammunition.
stable mica
Noticed this to, you get used to it by recognizing the box but they should definitely change it in some way
final valley
a lot of stuff requires color changes. Looking for soul graves is painful when they share their color with secondary weapons ammo and souls. Purple is used by "secret missions" related stuff so i don't know how good of an idea it is to make utility also purple.
somber wadi
purple for utility is a big yes for me