Args for proxychains should be f:q => -f file : -q quiet. From comments in the same function: # $precommand_options maps precommand name to values of $flags_with_argument, # $flags_sans_argument, and flags_solo for that precommand, joined by a # colon.
zsh-syntax-highlighting / highlighters
Navigate into the individual highlighters' documentation to see
what styles ($ZSH_HIGHLIGHT_STYLES keys) each highlighter defines.
Refer to the documentation on highlighters for further information.