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  <section id="color-transparency-and-emissivity">
<h1>Color, Transparency, and Emissivity<a class="headerlink" href="#color-transparency-and-emissivity" title="Permalink to this heading">¶</a></h1>
<p>Every object has a <em>color</em> (the default is white).  In addition, most objects may be made transparent by adjusting their <em>opacity</em>,  and the objects can be made to glow by adjusting their <em>emissive</em> attribute.</p>
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