For a look at some of the many other things NASA and other scientists have had to worry about besides the rocket hardware, see Packing for Mars: The Curious Science of Life in the Void by Mary Roach.
Mary Roach mentioned this as a possible future research endeavor by NASA in <em>Packing for Mars</em> (which is a great book if you haven't read it - all the stuff about space travel you always wondered but were to embarrassed to ask). She was taking part in a project in which she drank her own urine that was filtered within a custom-made water bottle.
She also said there was significant upheaval amongst American scientists during an international conference in which people were discussing the merits of recycling human waste during space travel. Nobody else seemed to mind as much as the Americans about the thought of eating your own poop (or at least nutrients derived from it), which should come as a surprise to no one.
You jest, but it turns out that selecting for these missions, along with stuff like selecting for astronauts, is mostly about stuff like how you get along with people. Researchers now believe that mixed gender teams are best precisely because you end up with pair bonding and stabler psychologies.
I strongly recommend the brilliant and readable PACKING FOR MARS which is all about this stuff. She talks to a lot of antarctic scientists.
http://www.amazon.com/Packing-Mars-Curious-Science-Life-ebook/dp/B003YJEXUM/
This book is more about the voyage to Mars rather than colonization, but it's still an interesting read:
https://www.amazon.ca/Packing-Mars-Curious-Science-Life-ebook/dp/B003YJEXUM
Read Packing for Mars by Mary Roach for confirmation that, indeed, you would not be able to handle it. ;>) It disavowed me of any notion that I would.
I just read about him in Packing for Mars: The Curious Science of Life in the Void....Fantasic read btw, not done yet but highly recommend!