In this case, B&W or color?

My company specializes in processing old film. I have a question pertaining to the processing of long expired Kodak disc film which hopefully the answers I get here will help direct our approach.

We can process this film into a B&W negative with virtually a 100 percent success rate in salvaging a recognizable image.

or

We can process this film into a color negative with about an 85% success rate with about 20% actually having decent color. 15% of them the disc with this approach come out entirely blank.

Should you find an old undeveloped disc film with old pictures shot on it, in an either or situation which would you choose? We may end up offering a choice but its a bit of a logistical headache.