title: Vim highlighting with solarized color scheme
body: <p>I have a vim highlight to display whitespace errors in code:</p>
  
  <pre><code>" Highlight redundant whitespaces and tabs.
  highlight RedundantSpaces ctermbg=red
  match RedundantSpaces /\s\+$\| \+\ze\t\|\t/
  </code></pre>
  
  <p>Which displays trailing whitespace problems like this:
  <img src="https://i.stack.imgur.com/wphnv.png" alt="White space errors highlighted in red"></p>
  
  <p>However, i've recently started using the <a href="http://ethanschoonover.com/solarized" rel="nofollow noreferrer">solarized</a> color scheme and I am not able to get these highlights to display.
  <img src="https://i.stack.imgur.com/ka4zA.png" alt="solarized with no highlights"></p>
  
  <p>I've tried changing the color names to no avail.  The relevant part of my (simple) .vimrc says:</p>
  
  <pre><code>syntax enable
  set background=dark
  colorscheme solarized
  </code></pre>