vimrc statusline jiggery pokery

gistfile1.txt

" Status Line Jiggery Pokery
" Use term=bold in teh user highlights for bold

hi User1 ctermbg=darkgrey ctermfg=blue   guibg=darkgrey guifg=blue
hi User2 ctermbg=darkgrey ctermfg=black  guibg=darkgrey guifg=black
hi User3 ctermbg=blue     ctermfg=white  guibg=blue     guifg=white
hi User4 ctermbg=black    ctermfg=yellow guibg=black    guifg=orange
hi User5 ctermbg=black    ctermfg=red    guibg=black    guifg=red    gui=bold 

set statusline=
set statusline+=%1*     "switch to User1 highlight
set statusline+=\ \ \   "spacing
set statusline+=%t      "full filename
set statusline+=\ \ \   "spacing
set statusline+=%*      "switch back to statusline highlight
set statusline+=\ \ \   "spacing
set statusline+=%2*     "switch to User2 highlight
set statusline+=%y      "filetype
set statusline+=%*      "switch back to statusline highlight
set statusline+=\ \ \   "spacing
set statusline+=%l      "line number
set statusline+=/
set statusline+=%L      "percentage thru file
set statusline+=\ \ \   "space
set statusline+=Buffer\ \#
set statusline+=%-3.b      "buffer number
set statusline+=\ \ \   "spacing
set statusline+=Col\ 
set statusline+=%3*     "switch to User2 highlight
set statusline+=\       "spacing
set statusline+=%-.c      "column number
set statusline+=\       "spacing
set statusline+=%*      "switch to User3 highlight
set statusline+=\ \ \   "spacing
set statusline+=Byte\ 
set statusline+=%4*     "switch to User2 highlight
set statusline+=\       "spacing
set statusline+=%-b      "column number
set statusline+=\       "spacing
set statusline+=%*      "switch back to satusline highlight
set statusline+=\ \ \   "spacing
set statusline+=%5*     "switch to User2 highlight
set statusline+=%8m     "modified flag, right-align
set statusline+=%-8m     "modified flag, left-align
set statusline+=%*      "switch to User3 highlight

" THIS IS FOR DYNAMICALLY CHANGING THE STATUS LINE WHEN IN DIFFERENT
" MODES

" first, enable status line always
" This is key to make the colours show up; not sure why
set laststatus=2

function! InsertStatuslineColor(mode)
  if a:mode == 'i'
    hi User1 guibg=yellow
  elseif a:mode == 'r'
    hi User1 guibg=yellow
  else
    hi User1 guibg=red
  endif
endfunction

au InsertEnter * call InsertStatuslineColor(v:insertmode)
au InsertLeave * hi User1 guibg=darkgrey

" default the statusline to green when entering Vim
hi User1 guibg=darkgrey