: invalid value) or use the <em>Hue</em> box.
To change saturation, click in the inner ring of the color circle or use the
Saturation box or slider.</p>
</section>
<section id="color-transformation-matrix">
<h4>Color transformation matrix<a class="headerlink" href="#color-transformation-matrix" title="Permalink to this heading"></a></h4>
<p>The color transformation matrix enables you to adapt the color reproduction.</p>
</section>
<section id="color-correction">
<h4>Color correction<a class="headerlink" 