I need to change the form of splunk login. I did try changing login.html in Splunk_Home\share\splunk\search_mrsparkle\templates\account and then restarting splunk but it did not work.
Please suggest a way to achieve this.
I am using splunk enterprise version 6.5.1
Have you considered using the documented changes?
http://docs.splunk.com/Documentation/Splunk/6.5.2/AdvancedDev/CustomizeLogin