Very recently I changed my ACR settings to open in Photopro RGB instead of Adobe RGB. Immediately I noticed some strange things going on with images created this way on both the web and in Picasa. I posted the following item here on CiC and noted that the coloration was wrong. C & C On Image
Having noted that my Picasa images were now also messed up, both in Picasa and on Picasweb, I decided I need to look into this further. I posted a note on the Picasaweb forum and quickly Tom O'haver with Google responded back stating that I had a color gamut issue. I put two and two together and figured out that my move to Photopro was the culprit. You can see some examples of this by going to the link:
Oddly, the thumbnails on Picasaweb show the colors correctly for both Photopro and aRGB. The desktop version of Picasa cannot display either the thumbnail or the full image correctly with Photopro RGB.
My question is, If I want to use Photopro, how do I convert back to an aRGB or sRGB gamut for Picasa and web display? Clearly simply converting from 16-bit to 8-bit and making a .jpg does not correct the colors to a gamut that can be correctly displayed.