I was about to post something about my set at AUM, but Lauryn beat me to it. I'll go ahead and post it anyways.
I played right after Lauryn on Saturday morning. Maybe just a small part of the beginning of my set could've been considered dark, but it certainly didn't end that way. I worked my way into some nice melodic full-on and then ended with a little bit of prog. Then Steve of D-Space went on after me with some very nice melodic prog.
Then on Sunday morning, Paradigm played some melodic full-on and Avery (can't remember his DJ name) went on after him and played some nice prog. So yeah, not every set at AUM was dark, but the majority of it was.
For the parties we (Goahead) did in Ohio over the past 7 years, we have booked all kinds of psytrance acts from the proggy sounds of Magnetrixx to the full-on sounds of Analog Pussy and to the dark sounds of Mubali.