That's why. Explanations from the illustrator doctor.
It's about age spots, which we mistakenly call hepatic.
Age spots are age spots on the skin that appear in people over the age of 50. Therefore, age.
These spots appear on those areas of the skin on which the sun shines.
They appear more often in people with fair skin and redheads. That is, those who have been deprived of a normal tan all their lives. These people did not sunbathe in the sun, but were burned. But then, gradually with age, the pigment cells in their skin find the strength to depict something like a tan. But they only get spots.
These spots have nothing to do with the liver. Rather, they have a color called Liver. What in English means liver.
In general, there are several shades in this group of colors: dark, canine, chestnut (horse), organ (the liver itself). But I personally like the simple color "Liver" the most. It just resembles those age spots on the hands or on the forehead of the grandfather.
Look at the square above in the picture. He is the same LIver color. Does it look like an age spot?
This color has an official designation, which is indicated in hexadecimal color code as I drew. I can't write an encoding in the text here, because it arouses suspicions in the local algorithm. It seems to him that I am introducing something to him somewhere.
This hexadecimal system is used in computers to encode colors. Computers need to encode colors as gradations of red, green, and blue. Each color can have a value from zero to 255. So computers are more convenient to use the hexadecimal system for this. There, each shade of red, blue or green is indicated by two symbols, which can be a letter or a number.
Well, that is, you and I have ten numbers, and computers have the same ten numbers, but also an additional six letters. This makes sixteen characters together. Hexadecimal system.
In short, if I were not a doctor-illustrator, then I myself could be wrong.