news.scss: consolidate .endless-search-box
news.scss: consolidate .endless-search-box

This module is entirely covered by the default theme, but
override colors to adjust it to the news theme.

https://phabricator.endlessm.com/T11949

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib