different color combo

Most "white" interiors usually have a black dash, carpet, and console (if equipped).

Some 67-69's (and 68-70 B's) had a colored dash and carpet with white seats and panels.

A true tri-color" interior would have a different color code for the "upper door panels", than the rest of the interior.

There are a few sites that list the percentages of colors produced for a given model and year.