Hmm, it may look a little weird on the table, as everything else _won't_ have source lighting (unless you play in the dark and just point a flashlight at the table

)
Are you trying to represent ordinary
IG who happen to be fighting in the dark, or night-fighting specialist
IG? The latter would certainly be easier and perhaps be a cooler theme - very dark uniforms designed to blend in with shadows, with a little highlighting to give visual definition, perhaps something similar to Black Templar colour scheme?