You’ll need custom CSS for the new term. Look at the existing CSS and add your own in your theme’s CSS.
/* =Listing overlays
------------------------------------------------------------ */
.widget .listing-wrap span.listing-status {
color: #fff;
background: #53c331;
background: rgba(83, 195, 49, 0.80);
font-weight: 700;
text-align: center;
text-transform: uppercase;
box-shadow: 0px 4px 1px rgba(0, 0, 0, 0.2);
}
.widget .listing-wrap span.listing-status.active {
background: #53c331;
background: rgba(83, 195, 49, 0.80);
}
.widget .listing-wrap span.listing-status.sold {
background: #be1d2c;
background: rgba(190, 29, 44, 0.80);
}
.widget .listing-wrap span.listing-status.pending {
background: #db8323;
background: rgba(219, 131, 35, 0.80);
}
.widget .listing-wrap span.listing-status.new,
.widget .listing-wrap span.listing-status.reduced,
.widget .listing-wrap span.listing-status.for-rent {
background: #24a4ea;
background: rgba(36, 164, 234, 0.80);
}