Karin:
I have a couple of colors - medium gray, a nice blue, and black. It all depends on the show and how dramatic I want the booth to look. I also have two multicolored celtic patterned throws that I have used in the past - the pattern breaks up with the art over it, and adds a bit of additional color and interest to the booth.
If you do shows indoors or outdoor shows that run into the evening, you will want some lights. I got mine at Office Depot. They are standard desk lamps on an accordian arm. They have a little clamp which you discard and stick the pole end into the tops of your panels. I think I paid like $9 each for mine and I have 7 of them. Lighting at indoor shows is often really bad so bring your own.
I don't know what shows are out by you, but some of the best on the East coast are the Sugarloaf Craft Fairs. They are huge events that I have been to in Virginia and Maryland just as a spectator. There are some crafters, but there are lots of really high quality artisans and some good artists too. Attendance runs in the tens of thousands and again, they pay to get in.
Be prepared for how hard it is to do these shows. First, you have to pack everything in your vehicle, then completely unload and set it all up - exhausting in itself. You are in that booth for the duration of the show - rain or shine - cold or swealteringly hot. Suddenly you are a shopkeeper. I do several shows that are four days starting at 10 a.m. and closing at 10 p.m. at night - meaning that you are there at 9 and leave at 10:30 or 11:00 - long days. When it is all over, you have to break it all down, load it up, and unload it back home. It helps a lot if you have a second person to help you and give you bathroom and food breaks, etc. Not trying to discourage you, but prepare you for the effort - it is a heck of a way to make a living.
