harvesthq/chosen — pull request #1349 by mac2000 (2013-07-15 15:29:27+00:00)
Title: Data value attribute for search result items

There is times when you need to highlight some of the options, for example major cities in huge list.

Easiest way to do that will be something like this:

.chzn-results li[data-value='1'] {
color: red !important;
}