When I was a teenager, I used to drive to neighborhoods across town on dark, nearly moonless nights. I would always wear dark clothing; not quite black, but a very deep navy blue, as I found dark blues are much more difficult to spot in pale moonlight than total black. Besides my car key, the only other pieces of equipment I kept with me were a small multitool and a 4" blade that I spray painted black to eliminate any reflections. The multitool, of course, allowed me to easily enter homes of my victims that I had been watching over the few nights prior. This surveillance was important, as it let me keep track of their sleep patterns and also whether they had any sort of alarm systems; I'd quite obviously avoid any home with alarms. It seemed that 90% of the people I watched were single males between the ages of 20-30. Single men of that age are young enough to not consider home security a major concern, but were old enough to have committed sins worthy of feeling my punishment. As I said, the multitool made lock picking quite easy, and from there, it only would take a minute or two for me to quietly sneak into my target's bedroom and kill them; a 4" blade can severe a trachea like a "hot knife through butter," as the saying goes. On the way out, I'd grab whatever cash was in their wallet and head home for the night, satisfied with my deed. I kept this up for a few years, and some how, no one ever figured me out. I'm still tempted, on nights like these where the moon is hiding, to pick up that blade.
So, no, darkness does not scare me. Darkness is my friend.