Smarter navigation plugin and custom taxonomies

I’ve figured out the issue. Here is the working code:

foreach ( get_the_terms( $posts[0]->ID, 'colors' ) as $term ) {
    $term_link = get_term_link( $term, 'colors' );

    if ( false !== strpos( $referrer_url, $term_link ) )
        return $term;
}