Adding a little color to my routine

My next run may be the most fun yet.  That's what previous participants have said.  I am going to do my first Color Run this Saturday.   It's low key as far as performance is concerned.  It's not a timed race.  That will be a change of pace! I'm doing it for fun, and because I told a friend I would run with her.  We will probably be walking parts of the course.  Although I do have a competitive streak (who knew?) I am trying to give myself permission to go slow enough to enjoy, to stop and smell the roses, or at least take time to throw some paint! 
I am looking forward to it.  I need to find a white shirt to wear and I am wondering ... should I wear my running watch?