Black is associated with death, but it's a boring color. I want something that makes this site more colourful, but at the same time, it needs to stick with the theme of skeletons; red hurts my eyes, so it's out the door, green isn't exactly a dead color, so it too is out the door.
I thought about blue, because I like blue, but I'm not sure if blue screams "skeleton". White might work, but it's still too... white.
Here is a look at some options ordered according to the rainbow: