Then there are speakers that are more bright than they actually should be, which may be fine as a working tool identifying problems in a recording.
Pro speakers for recording rigs in studios with consoles (64 channels, etc) are designed to be bright, or chosen for their unnatural brightness...as a form of revealing what is put in a mix. So that it is spotlit and thus manipulable, workable, mutable, changeable. Where slight changes in the recording can be heard. It is purposely exaggerated and unnatural.
This means you should never think that a studio monitor speaker is even remotely suitable for neutral and balanced home use. They are emphatically not.
Neutral speakers for mastering, is another thing altogether.
This is true most of the time, so much so that it is a logical maxim. There will be exceptions or people taking exception with such statement. Sure. Whatever... But it is very much a norm in recording studios. Horses for courses.
NS-10 speakers from Yamaha, for example... are trash. Utter trash, and not suitable for home use or balanced listening to actual recordings in your home. Unless one is a masochist.