I just got a new one too, and the display colors definitely do not match the older SDS200s.
I highly doubt this is a 'defect'. It's just a change in either the display itself or somewhere else in the display circuitry.
I had to send in a BCD996P2 a couple months ago because the display died. And yes, I tried the "re-seat ribbon cable" fix with no joy. It came back with a new display ... which does not match the colors of another 996P2 I have.
If the OP thinks the scanner is defective and wants to send it back that is an option. Personally I was like, "Hmm they must have changed the display" and have been enjoying my new one very much, thank you.