I'm using version 5.4.27, on NeoForge 1.21.1.
I was told somewhere (I forget where) that putting no block with the camouflage module should render the forcefield as invisible. It does not, instead using the default forcefield texture.
If this is the intended behaviour, consider this as a feature request. Not all modpacks have invisible blocks to insert to the left of the module, after all. Thanks!