Agents warn authors that covers are often horrible and there's nothing the authors can do about it. Me, I'm 2-for-2 on being absolutely ecstatic about cover designs. My editor at Contemporary Books told me that she rejected the designer's first attempt at a "Lapsing Into a Comma" cover because it looked too much like the cover of "Woe Is I." I never saw that first effort, but I loved the second one. I may be wrong, but I suspect that some ideas about typefaces and colors were gleaned from this Web site. I'm not complaining.
I offered a suggestion for the "Elephants of Style" cover, echoing the "Lapsing" cover but with a slight palette change and a retro typeface twist. Proving why I'm a writer and not a designer, the design staff at McGraw-Hill (which in the interim had bought Contemporary) did me one better. Very retro, very sleek, very nice. I'm definitely not complaining.