Luminous Opera — Luminous Opera continues the trend by taking a traditional Opera Red and adding a little more yellow and plenty of light undertones for some added brightness. Luminous Opera, in the Holbein "Luminous" color series, belongs to the pink color family. It is a vivid, almost fluorescent pink, described as a pink to rival peony or geranium petals. Some art supply sites describe it as a primary magenta with a hint of fluorescent pink.