Adds random jumpsuit colors for assistants

- Assistants now spawn with random jumpsuit colors
- Added an object sprite for previously unused maroon jumpsuit
- Added path for maroon jumpsuit

![giph](https://cloud.githubusercontent.com/assets/7247232/4619401/c3cbd1a6-5314-11e4-88ed-d10e91ab3a52.gif)

Probably because I mentioned you could do this a few weeks ago.