City Lights or UFO Lightships seen on ISS Live Feed?

With the on going UFO activity above earth, now a series of odd-shaped light objects have been captured on the ISS live feed, the last days. 


What are these colorful anomalies seemly moving in our atmosphere? Are they UFO-lightships or some kind of space debris or does the ISS just fly over city lights on the dark side of the earth? 

You can find and watch these anomalies at the following video links of the ISS HD Earth Viewing Experiment. 

http://www.ustream.tv/channel/iss-hdev-payload 
http://www.ustream.tv/recorded/128607141 
http://www.ustream.tv/recorded/128608769 
http://www.ustream.tv/recorded/128610346 
http://www.ustream.tv/recorded/128611223