Fringy squares in red, orange and blue. Pink trapezoids encasing red circles stacked like snowmen. A melée of florals in primary hues. If you enjoy extravagant color and wildly imaginative patterns printed on paper, walls or fabric, head to Bethany Andrews-Nichols' Burlington studio, or to her website. The Beenanza Design owner, 41, "loves finding innovative ways to interpret a 'print,'" she states on the site. And multiplication is part of the mojo, she promises: "No matter how I do it, I do it on repeat." So, what might a visitor to Andrews-Nichols' home discover? Shouty wallpaper? Zigzaggy shag rugs? Cushions with eye-popping optics? Nest determined to find out. The answers were surprising. Yes, color is elevated at the Lyman Avenue house in Burlington's "So-Fly" (south of Flynn Avenue) neighborhood. For starters, the exterior doors are peridot green, the siding a complementary rich blue. But inside, the application of color and pattern comes in measured doses. Perhaps that's because other people live here, too: Andrews-Nichols' husband, Chad Nichols, 43, and sons Emory, 12, and Oliver, 15. (There's also a 1-year-old mixed-breed pup named Delta.) The couple recently renovated the 1964 home, which they bought in 2011. A two-story addition at the rear incorporates a sunken lounge with tall windows overlooking a new deck and grill gazebo; a small back entryway with coat hooks and a bench; a second-floor primary bedroom with a vaulted ceiling and walk-in closet; and another bathroom. Andrews-Nichols designed the striking chevron-patterned privacy screen in white powder-coated aluminum that shields the back door. The expansion enabled the family to turn a cramped living room into an airy dining room, onto which the front door opens. The wall to the left is cobalt blue. "I saw a photo of a living room in India that was all blue," Andrews-Nichols said. "I thought, That might not be possible, but I want that color! I went through the Benjamin Moore app and matched [it]." The other dining room walls are white; built-in shelves hold books, photos and some family Lego constructions; a dark wood credenza with white doors provides more storage and a deceptively midcentury aesthetic. ("I found that at HomeGoods," Andrews-Nichols confided.) Above it hangs a print of a space-exploration scene by Scott Listfield, a nod to what Nichols calls his "sci-fi thing." To the right is a light-filled kitchen, painted a creamy yellow. The honey-colored…