What should I consider regarding the color of my cover proof?
One suggestion is to try a variety of printers and screens to see possible variations in printing. Do not completely rely on one source when viewing an image. Since our printer prints in CMYK color, is it best to view and print your cover images in CMYK, not RGB, to get a more precise idea about what your finished cover version will look like. If you use extremely bright reds, yellow or blues, they may appear slightly more subdued because they are not included in the CMYK range.
Additionally, because we use print-on-demand technology and do not print mass quantities of your book at one time, covers and images can vary from book to book, print to print. Factors such as toner levels, variations in the mechanics of the printing press on a given day and variations in paper can create slight differences in each book cover.