been allocated (when the tilegroup with sync/displayed),
make sure to call invalidate() first to force a refresh of your data.</p></div></div><div class="field "><a name="setDefaultColor"></a><h3 class="anchor"><code><span class="label label-meta label-meta-value" title="@:value metadata">@:value({ alpha : 1.0 })</span><a href="#setDefaultColor"><span class="identifier">setDefaultColor</span></a> (<span style="white-space:nowrap">rgb:<span class="type">Int</span>,</span> <span style="white-space:nowrap">alp