You may not have bothered to have your colours ‘read’ (at great expense) because you know very well which you like, and as Christopher Lloyd showed with such elan, flower colours can be either mixed or matched, can be planted to make brilliant clashes, or keep to the softest of palettes. Mingling plants is really much more rewarding than worrying about ‘does my bum/hair/eyes look good with that ?’, and anyway the principle of ‘horses for courses’ is important. A pot of ‘mums’ for Mother’s day, or a startling bunch of gerberas to show just how much you adore a friend, have quite different meaning and impetus from the delicate effect you may be trying to achieve in a spring garden, or growing a plant of sombre beauty like our native Daphne laureola.