I'd start with a textured siding in a warm white. This could be shingles in the best material for your climate (vinyl, fiber cement, wood) or it could be brick that's been coated with mineral wash.
Then to compliment that texture, I'd go for a less visually noisy roofing material, like these architectural asphalt shingles in a warm wood tone color.
Next, for the doors and windows, I'd do pure Colonial Revival, with 12 over 12 windows, and an interesting 6-panel door. Both with LOTS of detailed trim.
Then, the accents. Shutters, for sure, with working hardware. The shutter color is to honor Muriel's quote to her painters ("I want it to be a soft green, not as blue-green as a robin's egg, but not as yellow-green as daffodil buds. Now, the only sample I could get is a little too yellow, but don't let whoever does it go to the other extreme and get it too blue. It should just be a sort of grayish-yellow-green.")
I think she'd love this one. To compliment that, I've done a darker color on the door, in this beautiful grey-moss color to add a bit of depth to all these lighter tones.
For finishing touches, a flagstone walkway with these green and grey tones, white half-round gutters to look quality but blend in a bit, and Colonial Revival lighting and hardware in both iron and brass tones to pop and add a bit of sparkle. And this is all topped off with new, but very vintage looking patio furniture and the classic holly shrubs.
And to make that inspiration real, here's those (real-life, ready to use) sources:
