I know nothing about astro-anything so forgive my ignorance, but what light source would a nebula be reflecting? Is it meaningfully distinct for each nebula?
I'm no expert either, I just think they look neat. But from what I know it's primarily the nearby star or star cluster illuminating them, so yes it'd be distinct. Also there are mixed emission and reflection nebulae so technically I suppose they reflect some of the light from the emissive portions, though I'm sure it's a tiny contribution.