Tangerine level would vary, but yes they would be het for patternless.
I'll post these here again:
<ul><li><a href="http://gekkonida.com/morphs.htm" target="_blank">Leopard Gecko Morph Guide (Gekkonida)</a></li><li><a href="http://gekkonida.com/genetics-guide.htm" target="_blank">Leopard Gecko Genetics Guide (Gekkonida)</a></li><li><a href="http://www.geckosetc.com/htm/genetics.htm" target="_blank">Leopard Gecko Genetics Guide (Geckos Etc.)</a></li><li><a href="http://www.geckosetc.com/htm/morphs.htm" target="_blank">Leopard Gecko Morph Guide (Geckos Etc.)</a></li><li><a href="http://www.illinileosandpetportraits.com/genetics.html" target="_blank">Leopard Gecko Morph & Genetics Guide (Illini Leos and Pet Portraits)</a></li>
</ul>