There aren't many of us out there writing light paranormal books. (To be fair, many of the darker paranormal books have strong humor elements. To be even more fair, some of the lighter paranormal books still get packaged with dark covers. And to be the fairest, my new series that starts next fall about descendants of Medusa swings a little darker than my other books.) But we are out there.
Whether a book is light or dark has less to do with the type of paranormal elements in the story, than with the voice and style of the author. While my mermaid books (Forgive My Fins) are super light, there are darker YA mermaids stories (Sea Change by Aimee Friedman and Siren by Tricia Rayburn), as well. Oh. My. Gods. take a lighter look at mythology, but the Percy Jackson series edges a little darker, and P. C. Cast's Goddess Summoning books darker still.
Maybe the determining factor is whether lives (or the fate of the whole entire world) are at stake. I don't think it's a spoiler to say that nobody dies in either my mythology or mermaid series. (I'm making no promises about the Medusa girls, though.) Or maybe it's just a darker, edgier outlook on life from the main characters. I guess it doesn't really matter why some books are darker than others, it only matters that there are readers out there for them both.
My question for all you readers out there is simple:
Do you prefer your paranormal on the dark side?
Or do you like the light, too?
Really, this paranormal author wants to know.