title: Where is the color of the cursor line defined?
body: <p>If I set <code>cursorline</code> option I get my current cursor line underlined and all characters which color is not specified also turn to yellow (yellow appears only if Normal highlight group is untouched). I wonder, where this color (yellow) is defined?</p>
  
  <p><strong>Edit:</strong> I know about <code>CursorLine</code> highlight group. The problem is that in default colorscheme which I am using it is not defined and <code>:hi CursorLine</code> shows</p>
  
  <pre><code>CursorLine     xxx term=underline cterm=underline
  </code></pre>
  
  <p>where xxx is colored with yellow and underlined. I do not want to change color, I want to add <code>cursorline</code> support for <code>2html.vim</code>-like plugin so I need some highlight group/variable/etc where I can get this yellow color from.</p>