Mach
5396
Perhaps, you raise a critical point, my friend!
I have two photos, which are in boutiques with the plastic still on them. This one is from February ‘20. The chapter ring appears to be that ice blue with the seconds numbers in red:

This other photo is from February of this year and you still see that chapter ring in ice blue with the seconds in red numbers:
Hopefully, one of our few owners of this stunner can chime in and provide shot(s) in natural lighting conditions.