Issue #3239372 by agami4: Add new colours to the colour theme settings (#2523)

* Issue #3239372 by agami4: Add new colours to the colour theme settings

* Issue #3239372 by agami4: Add theme settings updates

* Update social blue to the latest 2.1.0 version

* Add defensive checks to color settings.

Co-authored-by: Andrii Chyrskyi <andrii.chyrskyi@lemberg.co.ua>
Co-authored-by: navneet0693 <navneetsingh0693@gmail.com>
Co-authored-by: Tiago Siqueira <tiagobdesiqueira@gmail.com>