Blammo Kill Marker
I don't think it will see mainstream play yet but it does have certain tactical value in certain scenario games. And don't forget, it is not a paintball BB but its a marking BB.
I assume that after reading from the site it appears that these are easily removable and I would surmise perhaps as easy as removing dust bunnies or dust clods from your gear (We all know some fields carry some sort of dirt)
Check the site out lots of things to see:
Also could be fun for personal use when you are zero-ing in a red dot sight or practicing your aiming on a target