It is not advisible to impose any colour that will make a person, that will use this space, feel uncomfortable or dislike it. Feng Shui seeks the balance and using any information in a fanatic or strict way can cause a worse result than a correction itself. In a family home we have to find the widest degree of consense trying to respect the individual spaces.
We also have to say that a change outside the regular taste sometimes is necesarry, as we very often cristalize bad habits or aspects that are related to rigidification of the sensibility. It is similar to somenone who adapts to hear the sound very loud, to the smoke of an overcharged room, the excess of salt or in the case that regards us to certain colours that influence us negatively. One could start with little changes that accomodate bigger ones. It is possible that when you suggest someone to paint the whole house new, someone in the family will get in alert, but if you start with something more little he will adhere to the purpose. It is also possible to introduce colour through minor changes in the decoration like the bedspread, the curtains, a plate or a picture, etc. If the changes are successful they will give cause to treat other areas for the necessary integration.