Purple and yellow, complementary colors of opposite hues in the color wheel. Lavender and golden mustard, the complementary blend of vibrant plants used for hundreds of years by the ancient Greek, Roman and Native American cultures for their therapeutic qualities, and now by visitors of the Napa Valley. Calistoga's Lavender Hill Spa utilizes both plants and colors in a warm and healing blend. Added to a steamy bath or in a "muscle-melting mustard massage," the herbs soothe tense, aching bodies and frayed nerves.

Nestled into a hillside surrounded by gardens, this intimate spa mingles the sensibilities of the Far East in a distinctly Western setting. Exotic Buddhas, prayer flags and Asian sculptures and fountains greet wanderers in the tiered gardens, urging them to take a breath and enjoy a few hours of special treatment. Hailed as one of Napa's most romantic couples' spas, Lavender Hill offers specials for two: double bathtubs side by side, each "spiced" to individual taste, followed by blanket wraps or massages in warm, softly lit rooms.

For the lovebirds craving more quality time together, an intimate cottage lets them enjoy it all, from aromatic baths to foot reflexology, and facials to body massages. Intimacy is guaranteed, since the spa serves a maximum of eight clients at a time. Many treatment packages are "buy one, get one half off," so be sure to check the website beforehand. 1015 Foothill Blvd. (Highway 29), Calistoga. 707.942.4495.—S.D.

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