We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Book cover preview color is different than what the print is.
I ordered a proof copy of my print book. It prints fine. http://www.lulu.com/content/paperback-book/gran/19535164
I used CMYK at 300dpi. I am confused as to why the shown book preview distorts the color. The right preview color should like the RGB one here. http://www.lulu.com/shop/e-j-lewis/gran/ebook/product-22893395.html
I hope the distorted color preview is not what gets sent to amazon. I know doing the cover in 300dpi RGB mode will screw up the print. When I upload the CMYK, the lulu cover preview is wrong, yet, the pdf generated has the right color.
Is there something that can be done for the lulu preview to show right color?