As an artist and as a paint manufacturer, my concern is for all aspects of colour, particularly its harmonies. In 1995, I developed a colour system based on a set of five primary colours: my intention was to obtain the greatest number of pure hues with the least number of primary colours, and that, mixed in equal parts, these would yield a neutral black. This five‐colour theory was patented by the European Patent Office in 2001. A range of water‐based artists' colours, known as the Sirius Primary System, has been available for the past 25 years. An unlimited range of colours can be mixed using this concept, resulting in pure, harmonious, and vibrant colours, which can be applied in all areas where an expressive, creative use of colour is defined as the primary task: colour theory, colour education, art and design, colour concepts, and architecture. The fact that a full spectrum can be mixed from only five colours results in a very pleasurable introduction to painting as well as a great economic advantage.

中文翻译：

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五色理论：一种新的色彩方法

作为艺术家和油漆制造商，我关心的是色彩的各个方面，尤其是色彩的协调性。1995年，我开发了一套基于五种原色的色彩系统：我的目的是获得数量最多的纯色，而原色数量最少，并且将它们混合均匀，可以得到中性黑色。 。这种五色理论在2001年获得了欧洲专利局的专利。在过去的25年中，有一系列水性艺术家的色彩被称为Sirius Primary System。使用此概念可以混合各种颜色，从而产生纯净，和谐和鲜明的色彩，可以将其应用于定义了表现力，创造性使用色彩为主要任务的所有领域：色彩理论，色彩教育，艺术和设计，色彩概念，和建筑。全光谱只能由五种颜色混合的事实使绘画引人入胜，并带来了巨大的经济优势。