Revell is a better "match" since that's the brand Omega used. And often the paint dot will stay intact when the case is opened, so if you examine the dot with a loupe you can see a line in it where it has cracked.
If serviced by Omega they take the time to remove it, in particular since the case is cleaned and refinished with every service. Sometimes other places who may have serviced it do not take these steps. I have even been asked to try to keep the red dot intact by some customers. The dot in reality has little meaning, which is why Omega discontinued it.
Cheers, Al
