I think of it more as a colour scheme, of black dark blues and purples---a lot like this forum's colour scheme, actually! And like my own site's colour predominant colour scheme, although I do mix some lighter purples in too---after all, purple is in my site's name and is kinda my thing. :p In terms of reasoning, I really agree with DiffyaDude! It reminds me of all the cool, super out-of-the-way Web sites I find---I feel like some of the coolest have a lot of black and then some neon colours as their colour schemes, almost like a DOS-meets-vapourwave aesthetic. DOSwave?