#160;      end</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;    end</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;    <span class="keywordflow">if</span> ~ischar(color)</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;      color = 0.30*color(1) + 0.59*color(2) + 0.11*color(3);</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;    end</div><div class="line"><a name="l