Why have colors in my merged image changed? I am running Photoshop CS4 on Windows 7 and I'm viewing 3-channel RGB images. Something has changed and the blue channel doesn't appear in the image and the green channel is now blue. Everything looks perfect according to the thumbnails in the channel window. But when I looked at the merged image in the central view, again, blue is gone and green is now blue. I tried reseting the preferences - didn't fix the problem. I even tried reinstalling the software - still didn't fix the problem. Does anyone know the solution? I am so lost as to how to fix this.