From what I've seen, you WANT to raise your bottles up to 70-72* for carbonation.
When seaching around this site for that same answer, most people quoted or linked to this: http://www.homebrewtalk.com/f35/bott...ebrewer-94812/
You COULD leave them cooler, but just know that it will take longer to carb and waiting is hard enough! (as I still have yet to crack into my 1st batch)
Drinking: Oktoberfest, Wet Hop IPA, Spruce IPA, IPA, Pale Ale, Amber Ale, Session IPA, Fresh Hop IPA, DIPA 2.0, Citra IPA, Coffee Milk Stout, Black IPA, Red IIPA