Normal chests show up as green and are obviously most common. This is a great way to find hidden caves and loot underground. It may get a little overbearing though if you use it in an area that happens to have a lot of chests, like a storage facility, but it’s not overly distracting.
Trapped chests are highlighted in red and are of course rare but still able to be seen amongst all the common chests.
Enderchests are the rarest and highlighted in blue. If anything this mod is excellent for finding these and the trapped chests.