It’s hot - forty degrees in fact. A temperature which is bound to set the blood racing. Red. A bit of blue might cool us down. But there is a lot more to colour than hue. In spite of the present heat wave, everyone who has spent any time in Blighty will know that August, allegedly the peak of the British summer holiday season, will tell you that this can also be one of the wettest months of the year. If it weren’t so then we would not live in quite such a green and pleasant l