Interior design rules that can — and can’t — be broken

In the world of interior design, trends and influences are constantly changing. Colours have a few years in the spotlight before fading from view, kitchen and bathroom fixtures move through finishes from metal tones to black and back again and the cool tones of once ubiquitous, grey-toned flooring are making way for warmer looking options. But through all these shifts there are some basic rules that guide interior design — here three interior designers share their insights on rules that ca