The 2003 B-pillars were black and transitioned to body colored. Pulled plenty of VINs to confirm. It was a mid-year shift. Here are just two examples of the many I pulled.

http://gtcarlot.com/colors/car/2829993-6.html - 2003 black.
http://gtcarlot.com/colors/car/34095353-6.html - 2003 body colored.

Both are LX. Base [P73] also had this change.