Continuing my quest for weathering, this time I've decided to weather default green ammo box.

As usual, extract the file into your Fallout 4 directory.

And if you haven't done so already, ensure that your fallout4.ini (located usually in Documents/My Games/Fallout4/fallout4.ini) has the following line changed:
from
sResourceDataDirsFinal=STRINGS

to at least
sResourceDataDirsFinal=STRINGS\, Textures\