A Color-Drenched, Addams-Family-Inspired Dreamhouse in Rhode Island
Mattye Dewhirst's Tiverton Victorian is a spectacular fantasy decades in the making, with sun tunnels, a dumbwaiter, and an aversion to blue.

“The living room is called wasabi, and I just love that color,” says homeowner Mattye Dewhirst. “I know a lot of people hate it, but I don’t care. Photo by Tom Couture
Before designer Mattye Dewhirst’s Second Empire Victorian broke ground in coastal Rhode Island, it existed for years in her head. She started sketching out her dream home in high school, but other versions materialized much earlier—back when she discovered her love of design while playing the computer game The Sims.
“It may have looked like a castle in the beginning,” Dewhirst, who shares the home with her partner, photographer Tom Couture, recalls playfully. “But over the years, it got smaller and more realistic.”
She bought a plot of land she’d been dreaming about—one with frontage along an inlet off Sakonnet Bay—and teamed up with architect and family friend Matt Brown to convert her preliminary blueprints into a wildly colorful reality. The goal was to re-create the style of antique homes she loved while making room for features they often lacked, like sizable closets and lots of natural light.

The home’s black-painted exterior was partially inspired by The Addams Family. Dewhirst named her house “the Black Iris.” / Photo by Tom Couture

While some of her clients may shy away from pink, Dewhirst does not. “I painted this stairwell coral because I like it,” she states simply. / Photo by Tom Couture

Photos by Tom Couture
Next came infusing those plans with a riot of color. Just not blue. “There’s no blue in the house, because every client loves blue,” Dewhirst says. “I have plenty of opportunity to use blue at work, so I wanted to scratch all the other itches I don’t get to scratch doing work for other people.”
The itches in question? Pinks, red, black, purple, and green—specifically “ugly green.” “The living room is called wasabi, and I just love that color,” she says. “I know a lot of people hate it, but I don’t care. I could swim in it.”
In the green living room, the all-coral hallway, the brown primary bedroom, the black kitchen, and other rooms, the same color splashes the walls, trim, doors, and more. It’s a trend referred to as color-drenching today, but Dewhirst maintains she’s been going all in on one color since elementary school. “I love color-drenching because it allows you to get away with colors that might feel too crazy when you put them next to white,” she says.

The kitchen floor incorporates strips of black marble with white veining; the design is based off an Anni Albers weaving. / Photo by Tom Couture

Whimsical wallpaper and framed original art bedecks one of the guest bedrooms. / Photo by Tom Couture

Shades of muted purple grace this colorful powder room lit partially by a sun tunnel in the ceiling. / Photo by Tom Couture
To amp up the pigments throughout the house, natural light was key. “I avoid lamps at all costs,” Dewhirst says, so she spent the most time lining windows up across rooms to maximize cross breezes and sunlight. Every bedroom, for example, has windows on at least three walls. Elsewhere, there are five “sun tunnels” that pipe sunlight into darker spaces. Installed like ductwork, these mirrored tubes connect a domed window on the exterior with a recessed light-like portal on the interior. The powder room, for one, lacks windows, so there’s a sun tunnel in the ceiling. “In the middle of the day, you can still use that bathroom without turning the lights on,” Dewhirst says.
More vivid hues shine through in the home’s wallcoverings and tilework. In one bedroom, white-and-red poppy wallpaper covers the ceiling; it’s a design Dewhirst purchased almost 10 years ago, knowing she’d use it somewhere in her home one day. Meanwhile, the primary bathroom’s pale salmon, rust, and marigold tiles mimic a common weaving pattern—one Dewhirst often follows while working in her first-floor art and weaving studio.

Because Dewhirst bought the poppy wallcovering years ago, there was a finite amount to work with. Her installer finished with nearly 3 inches to spare. / Photo by Tom Couture

Wallpaper is used in every other room—like in this study—so guests aren’t viewing a competing wallpapered room through the door.

A cherry-red pantry is flanked by soaring rounded doorways and topped with a colorful sconce. / Photo by Tom Couture
Color extends to the home’s vintage-inspired features, too. Each bedroom has an antique radiator refinished to match the room’s palette—the radiators are secondary heat sources in addition to the property’s geothermal radiant heat. Rounded doorways and trim also get the rainbow treatment in red, orange, pink, and more. As for other new-old elements, there’s a dumbwaiter that brings groceries from the garage up to the kitchen, as well as a laundry chute connecting the primary bedroom to the laundry room in the basement.
Throughout the process, Dewhirst reveled in making bold design decisions that typical clients would shy away from. “The number of electricians and plumbers who came through and were like, ‘I love this pink hallway!’” she recounts. “I was like ‘Haha! I knew it!’ I think that people put so many restrictions on themselves. Maybe they just need an example because they can’t imagine what it might look like.” As for this example? She’s living it.

Dewhirst always envisioned having a greenhouse attached to her home. It’s “the anti-seasonal depression room,” she says, “because you can come out here and get some sunlight.” / Photo by Tom Couture

Photo by Tom Couture

Photo by Tom Couture

Photo by Tom Couture

Photo by Tom Couture
Architect Matt Brown of Bechtel Frank Erickson Architects
Builder Mello Construction
Interior Designer Mattye Dewhirst Interior Design
First published in the print edition of Boston Home’s Spring 2026 issue, with the headline “A Vivid Vision.”