You should plot this advice on a colour-wheel - try and form your own conclusions from this rigid set of rules. You'll find a simpler, smaller set of rules is

You should plot this advice on a colour-wheel - try and form your own conclusions from this rigid set of rules. You'll find a simpler, smaller set of rules is guiding them (which can be somewhat unique to your tastes). Also as an artist I would advise paying attention to both hue and saturation when looking at outfits. Usually things look bad because people put too many brightly saturated colours next to each other.