Colored `man` pages on OSX

.env

# ZSH / BASH users
# Add this to your .env, .bashrc, .zshrc, or whatever file you're using for environment

man() {
	env \
		LESS_TERMCAP_mb=$(printf "\e[1;31m") \
		LESS_TERMCAP_md=$(printf "\e[1;31m") \
		LESS_TERMCAP_me=$(printf "\e[0m") \
		LESS_TERMCAP_se=$(printf "\e[0m") \
		LESS_TERMCAP_so=$(printf "\e[1;44;33m") \
		LESS_TERMCAP_ue=$(printf "\e[0m") \
		LESS_TERMCAP_us=$(printf "\e[1;32m") \
		man "$@"
}

man.fish

# Fish users
# Save this file as ~/.config/fish/functions/man.fish

function man
env \
    LESS_TERMCAP_mb=(printf "\e[1;31m") \
    LESS_TERMCAP_md=(printf "\e[1;31m") \
    LESS_TERMCAP_me=(printf "\e[0m") \
    LESS_TERMCAP_se=(printf "\e[0m") \
    LESS_TERMCAP_so=(printf "\e[1;44;33m") \
    LESS_TERMCAP_ue=(printf "\e[0m") \
    LESS_TERMCAP_us=(printf "\e[1;32m") \
        man "$argv"
end

For anyone using a version of less that is more recent than 2021, you can make use of the new '--use-color' option like so:

export MANPAGER="less -R --use-color -Dd+r -Du+b"