title: Changing vim 'gutter' color
body: <p>See the screenshot of how I have vim configured below.  The 'gutter' i.e. where the '+' and '~' symbols appear show my git status using this amazing sublime text port for vim: <a href="https://github.com/airblade/vim-gitgutter" rel="noreferrer">https://github.com/airblade/vim-gitgutter</a></p>
  
  <p><img src="https://i.stack.imgur.com/YpRQM.png" alt=""></p>
  
  <p>How do I change the color of the gutter where there are no '+'/'~' symbols?  I.e. the grey part?  This is how you change the number column: <a href="https://stackoverflow.com/questions/250652/vim-initial-settings-change-backgound-color-for-line-number-on-the-left-side">VIM initial settings: change backgound color for line number on the left side?</a> but I can't find how to change the 'gutter' color.</p>
  
  <p>Any ideas?</p>
  
  <p>Many thanks.</p>