Your homes exterior is the first thing buyers see, The recommendation is to go with shades in the white, tan or gray color families. White colors translate to a concept of "shelter" or "safe haven", tans signal security, comfort and warmth, and gray to taupe can evoke a sense of tranquility.
Yellow is a nice alternative. Our retinas tend to register yellow before any other color. So that is an attractive option....but not oranges, purples, or reds....except as small accents edges.
Also evalute the home's surroundings to determine what's most popular in your area.