/usr/share/zsh/5.5.1/functions
Edit: /usr/share/zsh/5.5.1/functions/_htop (640B)
#compdef htop
_arguments -S : \
'(-d --delay)'{-d+,--delay=}'[update frequency]:duration (tenths of seconds)' \
'(-C --no-color --no-colour)'{-C,--no-colo{,u}r}'[monochrome mode]' \
'(-)'{-h,--help}'[display usage information]' \
\*{-p+,--pid=}'[show given pids]: : _sequence -n ${$(