When I have images with white parts, and I look from the side of my screen, the white turns yellow/grey (it's only completely white when sit exactly in front of the screen). I know my screen probably haven't the best angle view, but other white images works correctly. And its only on the portfolio page and on the "miniatures" (when I view a single portfolio) of the portfolio images that this happens. When I enlarge the images from the portfolio page (lightbox), the white parts look OK from the side.
When I use jpg or png, there is like a yellow/grey pattern and when I use gif its just plain grey/yellow. I don't know what to try, the images also look ok from every angle in Picasa and Photoshop.