Why are flags and subcommands highlighted in a different color?

[rsteube]

Some flags and subcommands are colored differently. Why is that?

[rsteube]

1. Flags are highlighted depending on whether they take an argument.

Color can be configured with carapace --style carapace.Flag*.

2. Commands are highlighted when they belong to a group.

Color can be configured with carapace --style carapace.Highlight*.
In zsh the group name can be shown with zstyle ':completion:*' format $'\e[2;37mCompleting %d\e[m'.