There’s a really interesting phenomenon regarding how cultures identify colors. While not every culture has a word for every color, the way colors are identified and named follows a very distinct pattern that is the same no matter where you go.
The first two color terms any culture identifies are white (or light) and black (or dark). Every culture has identifying words for these colors, even if they don’t have any other color words at all. This is obviously due to night and day being important concepts.
If a culture identifies a third color, that color is always red. This is most likely due to its association with blood.
If a culture identifies a fourth color, it is always either green or yellow. If it identifies a fifth color, it is whichever of the pair is left. These probably come about due to the association with plants.
If a culture identifies a sixth color, it is always blue.
If a culture identifies a seventh color, it is always brown.
The next four colors identified tend to be purple, pink, orange, and grey, but the order can change.
Cultures also don’t skip colors. For instance, if a culture has a word for blue, they will have words for white, black, red, green, and yellow as well. You will never find a culture that identifies blue but does not identify green.
(Your guess is as good as mine when gurple enters the picture.)