Nah, I'm not Zylaist though I read his book when I realized I had come up with something like his system. I had a bad facial eczema in 2014 and realized that when i had to go barefaced, almost none of my carefully chosen Light Summer clothes worked. Soft whites were the most flattering color for me, and ivory tones looked particularly good. Around the same time, I accidentally bought an olive green coat. I got so many compliments, although it was a color incompatible with many other colors on my palette.
Then I started studying what stylish people with my coloring actually wore on the streets and realized it was almost exclusively neutrals. It's probably not intentional, but having one's colors done tends to veer people towards brights, and this happened to me too. But I live in a conservative city and here only clowns at children's birthday parties wear brights
Neutrals look so much better in day-to-day dressing.
Zyla palettes can be a bit odd - he is a really odd looking fellow himself - and really limited too, plus the book was too wacky for me, and he is not strong on contrast. As a pale blonde, all kinds of blues are some of my best colors, but I don't really find them anywhere on my body. Also, really juicy reds (watermelon, tomato, coral, wild rose petal) are stunning on me, but my lips and cheeks are a bit more muted. So I use my personal coloring as a starting pont but take it up or down a notch, and complement with dark grays, blues, and blue-grays. As a result, I think I have found my comfort zone, something that feels totally me...
I'd recommend a color consultant for someone who is totally baffled about color and has a hard time combining colors. But if you follow fashion and like trends, some of the rules just feel limiting and unnecessary. They can make dressing even more complicated! So take it with a big grain of salt.