This game uses a fairly broad definition of color.
It doesn't take into account various tones that can make up a color. I've seen armor called blue at one level and in later levels a similar armor takes a darker shade.

The boot's are red in a technical sense. Pink is an interesting color as it's one that has an individual name in spite of it's just being light red. The game avoids particularly loud colors to help retain a natural look, but it would be helpful to have more color options within those boundaries, and also have those options correctly named.