Spanning nearly the entire floor of the main space of Mercer Art Gallery in Harrogate, Liz West’s expansive new installation invites viewers to revel in color and brightness. The artist has reimagined the historic early-19th-century spa promenade room as a vibrant, sensory immersion.

West’s solo exhibition, H.A.P.P.Y, takes inspiration from a common malady known as seasonal affective disorder, or S.A.D., which is a form of depression that often manifests in the fall or winter when the days are shorter and the temperatures drop. It typically recedes in the summer and spring.

Continuing her interest in the effects of light, reflections, and chromatic relationships (previously), the artist created “Our Colour Reflection,” the centerpiece of H.A.P.P.Y, to highlight the emotional, psychological, and physical power of vibrancy and hue.

Composed of 765 multi-colored discs layered in low relief across the floor, the piece transforms the environment into a luminous experience that interacts with natural and artificial light and evolves throughout the day.

H.A.P.P.Y also includes a selection of paintings, drawings, and models for “Our Colour Reflection,” and the exhibition continues through October 5. See more on the artist’s website and Instagram.