We had a mudroom in our old house, here are some before pics.
We used a paint stripper on the floor to get it as bare as we could.
We used a martha stewart paint for the walls (Bayleaf), we used a bright white for the trim and ceilings. We put in a little bench and viola!
This is one of a set of rocking chairs we had. They were pretty rough, but after a little wood filler and some outdoor spray paint they looked pretty awesome!