customizable multi color vase

So I guess technically yesterday (Sunday) my friend showed me this cool thing prussia is doing.
http://prusaprinters.org/original-prusa-i3-mk2-multi-material-upgrade-release/
Since there are not a lot of designs out there already that need more than 2 extrudes I figured I'd make something that did.

Also I realize it looks like trash in customizer. (not sure why but would love to hear what you think is causing it.)

Also not sure why multi file output isn't working... Or really why any of