
<h3>requireValidAlpha</h3>
<div class="member-signature"><span class="modifiers">protected static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">requireValidAlpha</span><wbr><span class="parameters">(double&nbsp;alpha)</span></div>
</section>
</li>
<li>
<section class="detail" id="requireValidColor(int)">
<h3>requireValidColor</h3>
<div class="member-signature"><span class="modifiers">protected static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="ele