If you use bash, just add the following script in your ~/.bashrc:
export PAGER="/bin/sh -c \"unset PAGER;col -b -x | \
vim -R -c 'set ft=man nomod nolist' -c 'map q :q<CR>' \
-c 'map <SPACE> <C-D>' -c 'map b <C-U>' \
-c 'nmap K :Man <C-R>=expand(\\\"<cword>\\\")<CR><CR>' -\""
Compare with the original Main
Main in VIM has good looking with syntaxheight.
