How to add custom page element style to the ribbon in SharePoint 2013?

I have created new page element style for paragraph and headline in SharePoint ribbon and hide default one.

The newly created style shows in style drop down list but not on ribbon (before drop down selection).

In Ribbon it shows default paragraph and headline style.I want to change default style to new style without overriding.

TO hide default style in SharePoint style drop down list referred below link:

http://blog.sharepointexperience.com/2014/06/hide-from-sharepoint-ribbon/

Please provide your suggestion

Thanks,

Siddheshwar