If the fixtures are antique and made of brass you may be able to have them rechromed. This would require you to remove the fixtures and find an industrial rechormer. People that restore old...
Plumbing is the art and technique of installing pipes, fixtures, and fittings.
Answer 2.
Plumbing, from the Latin plumbum for lead, is the skilled trade of working with pipes, tubing and plumbing...
YES, as a 'PLUMBING INSPECTOR' you do need to be at least a journeyman plumber.in certain cases (rural) you need to be a public health official with sub-standard training in inspections.