Without question, gray is the most common roof shingle color. While generally considered neutral, the variation of hues for gray is extensive, meaning choosing the roofing color should be made alongside choosing other exterior colors for a well-coordinated look.
In a wonderfully-helpful infographic (click on the Resource link below) color expert Kate Smith with Sensational Color has worked with DaVinci Roofscapes and a multitude of paint companies to offer color tips and advice for:
* The Top Shades of Gray for a Roof
* The Best Shades of Gray for a Home Exterior
* Favorite Gray Combinations on a Home Exterior
Resource link