How can I remove the horrible color of my vim status bar has? I'd like it to be the same color as the background.

My current settings in my ~./.vimrc file (or ~/.vimrc.after file as I use) which relate to the status bar are:

set laststatus=2                            " Show the last status
hi statusline guibg=#263238

set statusline=%f                           " Filename

function! InsertStatuslineColor(mode)
  if a:mode == 'i'
    hi statusline guibg=#573E81 guifg=#263238
  elseif a:mode == 'r'
    hi statusline guibg=blue guifg=#263238
  else
    hi statusline guibg=red guifg=#263238
  endif
endfunction

au InsertEnter * call InsertStatuslineColor(v:insertmode)
au InsertChange * call InsertStatuslineColor(v:insertmode)
au InsertLeave * hi statusline guibg=#c5c8c6 guifg=#263238

" default the statusline to green when entering Vim
hi statusline guibg=#c5c8c6 guifg=#263238

I am using MacVim v7.4 (88).