I have a bunch of duplicate photos in Aperture. They came from separate iPhoto libraries. Some of the photos have the profile name
sRGB IEC61966-2.1 and others
Camera RGB Profile. Which should I keep? Does it make a difference?
Have a look at Apple's KB article on Aperture: Color and gamma settings for print and web for some ideas on correcting. I'm not an Aperture user, so I can't really help there.
I used to have my camera and editing programs (mostly Photoshop) set to sRGB, but after reading numerous articles I decided to set my colour settings to Adobe RGB (1998). It gives you the most accurate/rich colours from your shoot. This article puts it in perspective: http://fstoppers.com/adobergb-vs-srgb