some skins here:

http://djbb.dk/floops/board/index.php?showforum=13

and here, dunno why put even though it's russian (the homepage), i found the skins directly

http://www.mixgalaxy.ru/fruityloops/....php?cat=skins

...

http://forum.deviantart.com/devart/thumbs/386107/

esp. check this skin, hehe - fl sx skin

http://www.deviantart.com/deviation/11994921/


/edit
mmmh seems to be some problems with fruity 5 and skins???