http://blog.naver.com/dabar76/140117791651
UI_1 is possible.
So... Is UI_2 possible??
You would need to use application.css and a custom mako template, but yes it is possible.
http://www.splunk.com/base/Documentation/latest/Developer/UseCSS
http://www.splunk.com/base/Documentation/latest/Developer/AdvancedIntro#Layout_templates