I have tried to print a very small booklet (3 8.5 x 11" pages, folded in half) with a color cover. I have gone to the cover portion on the screen and selected front cover and selected the cover tray where the colored paper will be. However, when I try to copy the pages, I either get all white or all blue (the color I want the cover to be) or I get a message that says the cover tray has not been set. How do I get a simple color cover?