Log cabins and cowboy hats are part of the visual vernacular in Wyoming, my interest in them diluted by their ubiquity. This Joshua Tree installation arrests my ambivalence: Phillip K. Smith III modified a 70-year-old cabin with mirrors and LED lighting to create the illusion of transparency, particularly profound in the arid expanse of scrub brush and desert sand (a profundity referenced in the installation’s name, Lucid Stead). This organza frock channels the installation’s colorful translucence and calm amid extremes. Even though Lucid Stead is no longer open to the public, Smith is busy working on other ambitious artworks: this Friday at Coachella, he unveils Reflection Field, a more elaborate light installation involving five massive, mirrored volumes of light. Computerized color progressions will make the sculptures disappear into their dramatic surrounds. Lucky Coachellians.