HealthShare css style and navigation application extension

In HealthShare, we can add any new application that will show up in the left menu of the viewer. I am trying to add new navigation entries that will look like 'patient search' popup. 

- Is Intersystems sharing its HealthShare style? They are using material tags, but it looks very different that the default material themes. I probably can pick up the style, but perhaps there is an official way.
- Is there a way to do a popup like patient search? So far I see, a new option is associated to an url not some javascript code?

Thank you for your help.