GW-225C (Master Blue) bezels are no longer available. Casio told me they don't have any and can't order more because they are discontinued. Keith at tiktox said he won't be getting any more either. I am going to have to take good care of my Master Blue modded frogman... Fortunately, the bands are still readily available (the Master Blue shares the same band as the Final Frogman GW-200Z, and I would hope that Casio will produce them for a while longer)
As a side note, as some of you know, the MIRB (GW-200MS) Frogman bands have been discontinued for a while, but the bezels are still available at some places like tiktox.
GW-225E Glorious Gold (the clear) bands and bezels are still available, but who knows for how long.
GW-225A Dawn Black bands and bezels are still available at tiktox. I didn't ask Casio about these because I don't have my Dawn Black anymore, but last I checked they were still available direct from Casio.