Guzmanias are bold, stylish houseplants that work especially well in contemporary, modern, and tropical decor styles. Bromeliads have colorful, long-lasting blooms (which last for weeks) that contrast beautifully against the strappy green leaves. You'll typically see them flower in shades of pink, red, orange, and yellow. In addition to their exotic look, bromeliads also improve indoor air quality, helping clear air of indoor pollutants such as formaldehyde (which can be released by paint, gas-burning appliances, and clothing that has been dry cleaned).