On a subtle level, the colour on the exterior of your house can either strengthen, weaken or be a neutral affect on your house and the occupants. This is determined which way your house "sits". You will need to know, and its best to use a compass, in which direction the back wall of your house is. Each compass direction is associated with a Feng Shui Element. Each element is associated with certain colours. You can choose a colour palette that matches or enhances your house type.
House Sitting Direction Matching Colours Enhancing Colors
North Blues, black, water colours White, grays
North East Yellows, browns, oranges, earthy-tones Red tones
East Greens, wood colours Blues, black
South East Greens, wood colours Blues, black
South Reds, fire colours Greens,
South West Yellows, browns, oranges, earthy-tones Red tones
West White, gray, metal colours Yellows, taupes, browns, oranges
North West White, gray, metal colours Yellows, taupes,browns, oranges
Because a house is associated with a certain Feng shui Element, does it mean it has to be painted that colour? No, it means it could get away with using that colour and it would match or enhance the affects of the occupants.