I can't really figure what's happening, here's the case:
-I shoot pictures in RAW on sRGB
-I import in iPhoto, and export to JPG
-iPhoto seems to convert to aRGB, this is not possible to change.
-I upload aRGB pictures to WordPress, colors fade
-I change aRGB to sRGB with Color utility and upload same effect; faded colors.
We use Manifest as a theme, the website is http://www.kookjunkies.nl
Here you see a example,
-on the right picture above is aRGB,
-right picture below is same picture in sRGB,
both displayed in browser from blog
-left is picture in sRGB when viewed from HD with preview.
Hope someone has the solution!