I came here after a chain salon made me a fiery, orange redhead. I am a brunette. I never expressed wanting red hair, yet red hair I got. I called William Jon salon in tears and they made an appt for me the next day. They are not the least expensive place in Madison, but they are not unreasonable. And they fixed my tragic hair. It was amazing - not only did my stylist comfort me the entire time, but so did her colleagues. They all provided input and agreed on he best course of action - I felt like I was in good hands.
Also, it doesn't hurt that every stylist in the salon has beautiful hair. If they have beautiful hair, then I know I can trust them =)