No. The PCA process works for every person, of any age, ancestry, or colouring. People with colouring too complex to analyze do not exist.In my opinion, 12 Seasons is the right number. There are only so many colours that human eyes can tell apart, for one thing. Also, inserting more Seasons borrows colours from existing Seasons, blurring the unique energy and visual potential of each group.Any field of study can be as structured and specific, or free-form and artistic, as its designer planned. Colour and appearance are fully expressed when art and science cooperate.To be confident in the result, I desire a system in which drape calibrations and analysis process are consistent and reproducible. The Season gathers together people whose colouring shares more than it differs from the scientific viewpoint of how colouring is organized.Within any Season however, every person is an individual, with wide variety in apparent skin, eye, and hair colours, each with their own preferences and desires in appearance. Once the Season is identified, we will discuss customizing the palette to your best application of your colours, a process that you will refine many times over the years.