Designers and colorists know the correct color(s) that will work with your interior or exterior. An understanding of undertones is key to specifying the right color, and working with fixed and/or furnished elements often matter more than a color you "just love".
5. Don't follow trends for your exterior.
Painting your house the current 'hot' neutral will disappoint you when trends change. Instead, look at the era of your home, the architectural style, how your interior fits those elements, and use color choices that works all around.
Take a look at our other color related posts at www.designfromca.blogspot.com