When we step out into nature, we rejoice at the splendour of spring, when the trees almost seem to explode into a cloud of blossoms. We are captivated by summer meadows and their seas of flowers, and we catch our breath at the start of autumn, when the woods seem to shimmer in an endless display of colours. And in the winter we are delighted to see the sugar-coating of snow on the roofs and tree tops and the white blanket that lies over the countryside, giving us a sense of calm. The worlds of colours transport us emotionally, make our hearts beat faster or soothe our eyes. The same should be true of our homes. But their walls â€“ whose colours make up a large part of our living environment â€“ are usually white.