This spider liked my pot

I had a pot I had fired in Ben Owen's wood kiln recently and when someone bought it, I took it outside and set it on top of a piece of Formica to take a quick picture of it. When I went to snap the shot, there was a spider standing next to it, right up against the pot, and the markings on the spider are just the same as the finish on the pot.
I'm not sure what this means.
Anybody got an idea?

Here's the pot:



Michael