I think you might have to use the boolProp cheat for this one. I’m not sure. However, I would do it anyway.
In neighborhood view, type into the cheatbox: boolProp<space>testingCheatsEnabled<space>true (with the <space> meaning just a space)
Before starting to make a sim, press Shift+N (NOT IN THE CHEATBOX) and a box will pop up in the upper right hand corner of the screen. READ IT!!! This will give you options to have green skin, white skin, a floating head for a body, or a skeleton, even…