Style is a funny thing. It's something you can't really shake even if you try. It is the voice that comes from inside you no matter what story, genre, or type of character you're writing.
For instance, me, I tend to be 'sweet'. My stories, no matter how horrific, or thrilling (and some are) still have a general overtone of sweetness mixed with a slight humor. Some, if not bent toward the horror, or thriller genres are downright sugary, and some are heavier on the humor depending, but regardless, they all have a certain happiness underneath. Maybe it comes from my general happiness in real life. Perhaps those authors with extreme pain in their writing have that general outlook on life due to circumstances. Or, maybe I should just lay off the sugar I put in my coffee.
Another author I know, TC Allen, has a style that can probably best be described as 'Dawgpatch meets the x-files'. His brand of blatant tongue-in-cheek humor is evident no matter if he's writing about vampires, street vixens, or ghosts from the past. He's the perfect fodder for comedian Jeff Foxworthy who would probably say... 'You might be a redneck if...you love TC Allen's novels.' Of course, he lives in Oklahoma, so maybe that's where it comes from.
What's your style? Do you see an underlying theme, or emotional feeling in your work regardless of genre? Do you like it, or do you try to fight it to mold your writing into something different from what comes naturally to you?