<p>Selecting exterior house colours starts with thinking about the weather. If it gets too hot with many days of harsh sun, you need lighter exterior wall painting colour combinations. These light colours reflect light and keep the inside of the home cooler. If you stay in areas of high pollution, the exterior of your house tends to gather dust which then starts showing in the form of dull, grey patches. In such cases, colours like light grey work well by masking the grey and brown colours from the dust buildup.&nbsp;</p>