pan> <span class="parameter-name">center</span>, </span> <span class="parameter" id="sweep-param-colors"><span class="type-annotation"><a href="dart-core/List-class.html">List</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="dart-ui/Color-class.html">Color</a></span>&gt;</span></span> <span class="parameter-name">colors</span>, [</span> <span class="parameter" id="sweep-param-colorStops"><span class="type-annotation"><a href="dart-core/List-class.html">List</a><span class="signature