The colourway name and palette come from the spectral classification system that Annie Jump Cannon invented, which is based on the emission spectra of the hydrogen atom, and reflects the effective temperature of the star. The classifications are identified as ), B, A, F, G, K and M, andhave relative colour labels: blue, blue white, white, yellow white, yellow, orange and red, ranging from hottest to coolest. The colourway is a repeating sequence of the spectral classes.
The name comes from the mnemonic that Annie Jump Cannon derived to keep track of the classifications: “Oh Be A Fine Girl, Kiss Me.”