I have heard from watchmakers/sellers that black dialed watches tend to become foggy after a certain period of use. Most people suspect it’s due to the humid weather here in Singapore.
Above is an Orient watch that has this issue.
I believe it has nothing to do with the colour of the dial but more to do with how the watch is used.
This particular watch belongs to someone who works as a chef. He specializes in steaks which is my favorite food. From the oil stains on the bezel, I assume he has the watch on his wrist while at work.
I think grilling steaks or working in a kitchen/cooking environment puts the watch to higher risk of moisture intrusion since the job involves having the watch close to heat, water, oil, etc if he chooses to wear it while working.
Of course, other factors might have caused moisture to enter the watch such as not pushing the crown back in after setting the date/time.
The dial and movement seem good for now.