Selectable custom icons for file and URL resources

I use Storyline published as webpages. I upload using the Files resource and set the XXX.html file as the main file. This appears as a standard file icon on the course page.

I would like the option of selecting the icon (such as a Presentation icon) to better reflect the content.

This could also be applied to the URL resource as the link may be directly pointing to a video etc.