Oh this is a fun one, night camouflage is actually a bad idea and makes you more observable! The intuitive solution to low light camo is black right, so you can

Oh this is a fun one, night camouflage is actually a bad idea and makes you more observable! The intuitive solution to low light camo is black right, so you can "blend into shadow" right? But the problem is that you're not "blending into shadow", you're blending into your surroundings that happen to be in shadow, so you actually want to be the same color even if it's a light color. Otherwise you stand out by being too dark! *There are other considerations of course, reflectivity (including in the NIR spectrum) is a much larger concern in low light conditions for instance.