You could go with a lighter gray, a deeper gray, a grayed-blue, a grayed green, a cool taupe, etc. with contrast color trim. See Houzz Photos for "blue stucco exterior," "gray stucco exterior, "green stucco exterior" for examples. The colors of adjoining houses might also figure into your choice.

Uses two tones of gray can be very elegant. My most often given advice is "let the landscape provide the accent colors and add depth and interest". See a project I recently completed in Laguna Beach with that particular color combo.

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