Hi! I'm in the middle of making a dance costume magazine and I have over 100 photos of costumes - They were bright and eye-catching then just out of nowhere all the photos at the same time just kind of 'flashed' then went dull. I have no idea how to get it back to being bright?
Edit > Transparency Blend Space > Document RGB
Sounds like your photos are RGB and there is some form of transparency on the page. Keep in mind, though, that even with the blend space set to RGB, if you switch to overprint preview proof colors for print output your bright colors are probably out of gamut for CMYK printing and will shift a bit.