It is possible to change the icons by mentioning the icon name at the end of the metadata.
The metadata can contain multiple properties and values. The list of properties starts with the sign "?" and is divided by the sign "&". The values are set after the property with the sign "=".
Shown below is the common list of icons used for interactive content types:
Icon name reference list
Here you can copy the required icon name format and paste it along with the metadata format to display icons: