zsh: zstyle list-colors

[rsteube]

• compadd: ansi escape sequences are stripped
• compadd -l: ansi escape sequences work
• export ZSH_COLOR=${style}: does not work
• export ZSH_COLOUR=${style}: does work, but only if no default list-colors is set with zstyle
• zstyle ':completion:*' list-style '${style}: works, but values are only highlighted after second <tab> and changes the default
• zstyle ":completion:*:*:example:*" list-colors "${style}": does not work
• zstyle ":completion:${curcontext}:*" list-colors "${style}": does not work