How people use colour is quite personal and if one person said the colour red to 20 people, those 20 people would view the colour red in different tones or hues. This means that colour is subjective and is undoubtedly affected by our own likes and dislikes as well as location, light levels and use of the garden.
Colours can appear in different ways to us for example, red is classed as a ‘hot colour’ and it really does demand your attention and has the effect of coming towards you. Yellow also comes towards you but isn’t as demanding as red yellow tends to reflect available light. Green is ‘cool’, it makes a good backdrop to other colours and blue is a very cool colour that often seems to merge with the background and looks smaller to its red counterpart.