Breitling have always been that way about customisations away from what is available as standard.In actual fact Breitling's desire to "keep things standard" seems to extend futher than just parts that don't come on a specific model. My friend who has a B01 recently called BUK enquiring about having the polished bezel changed to a brushed version, and was told that they wouldn't do it.
This actually really surprised me when he told me because the B01 is available with both brushed and polished bezels and swapping polished for brushed isn't going to change the model number or anything. It'd still be AB01*** etc. Apparently they were adamant that if you want a brushed bezel you need to buy a B01 with a brushed bezel in the first place.
And it's all the more odd that firstly, BUK are usually very helpful, and secondly, BUSA are (apparently) performing these bezel changes with no problems at all.