Weight and icon "selected" style for custom content in sidebar on Confluence Cloud

We have an add-on where we add a custom content item to the space sidebar.
Does anyone know if it is possible to add weight to the item (like you could do with a web item)?
Also the icon on our custom content item does not get the same blue “selected” styling as the built-in items. This is probably because our icon is added as img with source to our svg file, and the built-in icons have inlined svg. Is there possibly a work around for this?
I’ll maybe open feature request about these small issues, but wanted to ask here first.