I think you left a part out. No offence, but said it was a 95B yet the Slide was marked with CZ 97B. My question is how did you know the weapon is a 95B? Did someone tell you? Was it new or used and in the original box and the box said 95B? That's the part confusing me the most. Also check the serial number on both the Slide and the Barrel and the Receiver. If they are all the exact same number and look untouched even vaguely then it's possible whatever the seller/owner told you is wrong, or possibly somehow a 97B got somehow put into a 95B box by accident.
As for the duel tone, well, has it turns out CZ did in fact have a duo tone 97 and yes it had a decocker, BUT the "D" was never added to the designator on the slide. SO, if we can get past that 95B problem, then what you saw was in fact a CZ 97 B w/decocker and duo tone. How much, if you don't mind me asking, was it for sale? If that is, it was/is for sale.