1983 9" Color RCA Colortrac Rescue

[jstout66]

Question for those that have this model. I saw in the paperwork that came with it, that the set features "auto color", which you can't turn off.
My question is.... when you are watching something in B&W is it a "true" black and white, or do I need to adjust the screen drives a bit?
Color is good on mine, but black and white looks more sepia toned.
I hated the color correction circuits in that era of RCA.