Hi Fellow MAC users.
Are your photoshop cs4 colours different when u save documents as web?

If so, here’s a solution and some reasons behind this.
STEP BY STEP SOLUTION: (for those who don’t wanna know why)
http://www.usabilitypost.com/2008/07/30/photoshop-color-profiles-for-web-images/
Have a read on this if ur curious instead:
http://www.viget.com/inspire/the-mysterious-save-for-web-color-shift/
Have a good day designing with synchronized photoshop > web browsers colours.
Choose your colours wisely friends (: