I am a very amateur photographer but I recently took some photos of a friend's play rehearsals. I shot in RAW so I would have more editing control and am using Aperture to tweak and catalog them. I've noticed that when I edit some photos and view them on Windows machines they look too dark or reddish but on my MacBook Pro and on my iPhone they look much better. I uploaded some of them to my PogoPlug and, using the iOS app the pics look decent but in Chrome on Windows 7 they don't. What can I do?