"http://themekit.nunogrilo.com/Extensions/NSColor.html">NSColor Extension</a> may be useful when overriding colors in ThemeColor extensions.</p>
<h3 id='fallback-assets' class='heading'>Fallback Assets</h3>

<p>ThemeKit provides a simple fallback mechanism when looking up assets in the current theme. It will search for assets, in order:</p>

<ul>
<li>the asset name, defined in theme (e.g., <code>myBackgroundColor</code>)</li>
<li><code>fallbackForegroundColor</code>, <code>fallbackBackgroundColor</code>, <c