[napy8gen]

Yes, currently no stylevars for threadlist even for forume forum list.
What we can do is to overwrite the css that gives color to it.

style manager> style name> edit templates> css templates> css_additional.css

/*-- changes threadlist bg --*/
.topic-list-container .topic-list {
background: #1e1d1c none !important;
}

/*-- changes sticky bg --*/
.topic-list-container .topic-list .topic-item.sticky {
background: #333333;
}

/*-- replace thick 2px border bottom of the sticky thread --*/
.topic-list-container .topic-list.sticky-list + .topic-list tr:first-child td {
border-top: 1px solid #222;
}