The rainbow headboard features earthy shades — burgundy, rust, mustard, moss, aquamarine and lilac — of the typically vivid hues to deliver depth and warmth to this petite bedroom. Tufted polka dot bedding adds fun tactile appeal, while an oversize fiddle leaf fig brings in life and greenery.

No need to search the skies for this rainbow. Grounding this playful and functional bonus room, a geometric rug delivers the spectrum of color, from red to indigo. Distinct areas throughout the space — a homework station, a cozy window reading nook and a sofa hangout spot — allow kids to spread out or gather together.

By opting for classic materials, such as white subway tile and a clean-lined vanity, it's easy to change up the look of this all-white bathroom. A whimsical rainbow shower curtain, along with the blue abstract artwork, adds the just-right splash of color. And when the rainbow trend moves on, it's as simple as hanging a new curtain to update the space.

Kids room are the most fun to decorate, since you get to step outside the rules a bit and play with shapes, color and design. This adorable space takes advantage of the sloped walls and clever nooks to build in a cozy bed and add plenty of architectural detailing. An unexpected twist on the traditional rainbow, antique thread spools are lined up in a shadow box.