Some remove the factory finish to promote a rusty/rustic look while others might be more inclined to refinish an old gun to help protect it from rust, corrosion and pitting and to cover up deep scars & blemishes.
The discontinued Uberti Millenium was a very popular and economical model due to it's lesser polished finish. It was matte black that some said looked like matte black paint even though it wasn't. It was a bead blasted chemical blue that simply required less polishing at the factory which reduced it's cost. And no one really complained about how it looked either. They were just bought, fired, appreciated and cherished.
I believe that someone could carefully & artistically refinish their cap & baller with Durocoat without offending anyone's senses, and the color selected should be secondary to if it was well protected from the BP elements and how it functions.
Some try to defarb their guns because they find factory markings offensive, while others find it offensive that the guns are then overly defarbed.
A gun finish is based on personal choice just like the color a person chooses to cover their house with. At least with a C&B revolver, the color or pattern doesn't impact anyone else's gun values one bit.
And if a women wants to change her hair color by dying it, then sometimes that too can result in an improvement to her appearance.
I shoot a red & black anodized color air gun so bold colors don't bother me. And many expensive rifles have bold, multi colored metal or laminated stocks.
I certainly hope that the opinions expressed above don't lead anyone to flip their old English powdered wigs!