I am having the same problem with colors shifting dramatically when publishing. Converting from AdobeRGB to sRGB helps but it appears Pubcoder recompresses the images when assembling the book and assigns a Generic RGB Profile instead of a sRGB profile. The finished product looks close, but not exact to the original file. The colors are desaturated. Is there a way to properly preserve the colors? or prevent Pubcoder from recompressing the images so the embedded color profile (sRGB or AdobeRGB) passes through without color shifting?