Mood Rings. In this section of the series, Harvey uses the same piece of driftwood as a foundation, painting it with different colour gradients to reflect shifts in emotional states or moods within a short time period. Harvey’s process reacts to the “thermochromic” mood rings of the mid-1970s—a fad that mistook changes in body temperature as mood swings, indicated by transformations in colour. The fad is part of a larger cultural impulse to connect colour gradations with mood, and Harvey’s pieces pay homage to the ongoing fascination with colour as an expression of intricate and complicated experiences of emotion.