This just happened and hour or so ago, so please keep you eyes out. My buddy's bike got ripped off at a party. Here's a description:
Older KHS frame, the kind with the curved seat tube. Very small(47-50ish) with a dark purple-to-blue fade paint job. Number "78" in stickers on seat tube, paint fairly chipped up from use. Oldstyle beer label on head tube. Bare aluminum sloping crown fork.
Steel track bars, black cloth tape on the drops, with a short 1 bolt alloy quill stem. Black seatpost, saddle narrow black WTB. Front wheel radial spoked Spinergy, slightly deep profile, spoked, not carbon. Rear wheel laced to a Phil hub, not sure about the rim. Very distinctive black plastic clip-on fender with spikes screwed into it, dog collar type, with a big sticker of a gasmask. Time mtb pedals, Sugino 75 cranks(I think).
Bike was stolen in Humboldt Park, from a yard at a party, near California and Augusta, around 11:30-12 tonight. Please keep your eyes open and grab this bike if you see it. There are only a couple bikes of this model in Chicago, and I've never seen another this size. There will be a reward of some kind for any info leading to the recovery, no questions asked.