title: Color in the Unicode standard?
body: <p>Unicode 6.0 added several characters with descriptions that suggest those characters are supposed to be rendered in a specific color:</p>
  
  <ul>
  <li>RED APPLE U+1F34E</li>
  <li><p>GREEN APPLE U+1F34F</p></li>
  <li><p>BLUE HEART U+1F499</p></li>
  <li>GREEN HEART U+1F49A</li>
  <li>YELLOW HEART U+1F49B</li>
  <li><p>PURPLE HEART U+1F49C</p></li>
  <li><p>GREEN BOOK U+1F4D7</p></li>
  <li>BLUE BOOK U+1F4D8</li>
  <li><p>ORANGE BOOK U+1F4D9</p></li>
  <li><p>LARGE RED CIRCLE U+1F534</p></li>
  <li><p>LARGE BLUE CIRCLE U+1F535</p></li>
  <li><p>LARGE ORANGE DIAMOND U+1F536</p></li>
  <li>LARGE BLUE DIAMOND U+1F537</li>
  <li>SMALL ORANGE DIAMOND U+1F538</li>
  <li><p>SMALL BLUE DIAMOND U+1F539</p></li>
  <li><p>UP-POINTING RED TRIANGLE U+1F53A</p></li>
  <li>DOWN-POINTING RED TRIANGLE U+1F53B</li>
  <li>UP-POINTING SMALL RED TRIANGLE U+1F53C</li>
  <li>DOWN-POINTING SMALL RED TRIANGLE U+1F53D</li>
  </ul>
  
  <p>I had thought font symbols were <em>always</em> grayscale.</p>
  
  <p>Did the unicode authors forsee that these might be rendered in different colors?<br>
  Within the official unicode.org PDFs (<a href="http://www.unicode.org/charts/PDF/U1F300.pdf" rel="noreferrer">http://www.unicode.org/charts/PDF/U1F300.pdf</a>), these are portrayed only as having different types of crosshatching.</p>
  
  <p>Is there any current mechanism that would allow for specific characters to be rendered in a specific color, based only on its codepoint, and not any other rich-text formatting? (eg. a color property within TrueType or OpenType font files)</p>