Have you carefully factored skin tone and eye color into your decision? You really should you know. Nothing worse than walking around looking all washed because you picked the wrong color.
When you use the services of a real professional, go to the appointment with an open mind. You may have your heart set of pale blond, but if the colorist can prove to you that a deep strawberry is really your best shade, listen to her. She is trained to match color with skin tone. She knows what will work, and what won't.