Deftly used color takes on a near alchemical quality, the right shade conjuring atmosphere and character from thin air. Dallas couple Muzzy and Karen Bass have never shied away from this prismatic potential. Having raised their children in a home equally colorful and joyous for more than two decades, they sought to retain that spirit for their empty-nester abode. The one they purchased—a “true grown-up house,” laughs Karen—exudes innate elegance, its limestone façade flanked by towering trees that filter warm light through French-style windows. In turn, the interiors unfold gracefully with marble fireplaces, crown molding and espresso-dark floors boasting herringbone detailing. However, the ambience “was monochromatic,” recalls Karen. “Bringing in color was important to us.” Seeking such a transformation, the couple fell in love with interior designer Mary Beth Wagner’s artful, layered style—and most all, her refined command of color.

True to form, the designer—alongside builder David Espedal and his project manager, Josué Gómez—embraced the white walls. “It was a blank slate,” notes Wagner. “We wanted to liven it up and create rooms that showcase the owners’ personalities.” A recent renovation meant few architectural changes would be needed. Instead, Espedal’s structural alterations focused on smaller spaces, including installing new tile and cabinetry in existing bathrooms and updating bar areas. Meanwhile, Wagner set about employing color to cultivate various moods—from the main bathroom’s ethereal creamy walls and floral shower tile to the powder room’s ornate dragon wallpaper and rosewood vanity. “Because they don’t need to match, I love designing bathrooms as their own little moments,” she explains.

Wagner further fleshed out the interiors with decor and finishes that embrace a nuanced, harmonized palette with meaning for the family. Many key color cues, for example, emerged organically from the couple’s dynamic art collection, “which set the tone,” notes the designer. Subdued backdrops allowed for more vibrant pieces, with select colors extracted from artworks as accent shades. In the family room, for instance, earthy walls surround a Hunt Slonem parrot painting, “and we pulled that blue hue from the parrot for the soft upholstery,” she explains. A complementary shade also lines the room’s former media closet, which was transformed into a concealed bar, “so opening up the paneling reveals a fun pop of color,” Wagner adds.

To complement the formal-leaning architecture, “furnishings are definitely a play on the traditional,” notes Wagner, pointing to selections like the custom oval mahogany dining table and plethora of bespoke upholstered silhouettes with rounded arms, waterfall skirting and tufted details. However, shapes remain a bit more streamlined to balance the multicolored motifs of the surrounding wallcoverings and textiles. Layered together, colors weave through pastel landscape wallpapers, paisley draperies and Oushak rugs. Textured bouclé, corduroy, velvet and cowhide infuse tactile dimension. And, as color is nothing without light, Wagner also favored statement fixtures comprising brass, sculpted metal, crystal and quartz.

Bright and buoyant, the resulting house feels as kinetic as the life bustling through its rooms. Amidst holidays with their children, rowdy games of Rummikub with friends, and champagne dinner parties in the blushing dining room lavished with new dinnerware (all pink, of course), the couple’s next chapter shows no signs of slowing down. “It’s a sophisticated house, but it lives and feels young,” says Karen. “We really look forward to creating new memories here.”