Allow expired events in the grid and style with phonecian purple

This does what I want, but likely needs a solution to allow the expired events to be removed gracefully at some point from the dashboard.

I'm not sure what that would look like, so here's enough of a patch to spark the discussion.

![purple](https://f.cloud.github.com/assets/284368/465766/791351ea-b642-11e2-993e-b35a3321ed16.png)