I had time today to do some research on the color issue I mentioned on 7/7. The executive summary is that Photoshop sucks at doing color space conversions.

Here is the more detailed answer. A lot of people report the same problem when saving JPEGs from Photoshop for their web sites. The consensus is that it has to do with color spaces, but I didn't stumble on any good answers that explained why people are having so much trouble with Photoshop in this respect. Many people reported that JPEG saving "used to" work correctly then at some point stopped. My research was not exhaustive, nor do I have the time or inclination to do exhaustive research on the topic.

The workaround I found was to save the finished photos as flattened TIFFs and use GraphicConverter to generate JPEGs for web use or for storing photos on iPhone without taking up as much space as TIFFs. If you have a good explanation of why Photoshop does such a lousy job of getting colors right when saving JPEGs or a good way to get good color when saving JPEGs directly from Photoshop, please use the Contact form above to send me a note. I have comments disabled here because I don't feel like dealing with comment spam. Unless you object, I will publish the essence of your note so all may benefit from it.