The standard icon for the Schedule app on the Gear S2 (Tizen v 2.3.2.2) is a white circle with the top segment and “31” in green.

It is what I get when I use the Application API:

 tizen.application.getAppInfo(id).iconPath

However, in the built-in Apps launcher, the Schedule icon changes daily to show the day of the month.

How is this done, and how can I get access to the custom icon from my web code?