The Forcefield Camouflage Upgrade can turn the field generated by an MFFS Projector invisible. It can also make the field appear to be made out of various materials, such as dirt, stone, or wood.
Note that while it does work underwater, the forcefield does not have as realistic of a disguise.
This upgrade modifies the MFFS Projector.
By default, the Camouflage Upgrade will make the forcefield invisible. However, it is also possible to disguise the forcefield as a certain type of block. Right-clicking on the Camouflage Upgrade will open its GUI, where you can place any type of block in the Camouflage Upgrade. If the block is supported, an "OK!" will appear beside it. The forcefield will then attempt to disguise itself as copies of that block. Be warned that this mod is still in beta, and many blocks do not disguise well, particularly blocks from other mods.
Force fields are not visible when viewed through semi-transparent blocks such as ice, water, or nether portals (Glass does not have this effect). This renders the camouflage upgrade useless when used for underwater forcefields (unless camouflaging with a block appearance.)
Note: The invisibility feature doesn't work properly yet. The only way to make the forcefield invisible is to add a Forcefield Zapper Upgrade.