OB will never replace your orange bezel for another color. They've never accepted modding and never will.
An independent watchmaker with an Omega parts account might be able to, but even then it's not a sure thing as I believe Omega requires serial numbers for parts orders, and if the original watch doesn't match the part they won't sell it.
I'm 90% sure that all PO bezels are compatible given the right simple tools. PO bezels are also compatible with SMPs, as there are plenty examples of modded SMPs with PO parts (hands, bezels, etc).
Ofrei, cousins, the 'bay or a classifieds FS or WTB might be your best course. I would be willing to bet that some independent AD's or watchmakers still have a few PO bezels in stock that would cost less than Ofrei's inflated prices on remaining Omega stock.
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