Since we updated a few mime icons (doc, spreadsheets, pdf, archives...), we stepped away from the themed mime icons to use either org-provided colors (like red for pdf, blue for docx...) or fallback to the standard grey #969696

I am not sure we benefit from supporting the svg coloring feature the mime API provides.
As of technical debt, I think we could deprecate and remove it.

cc @nextcloud/designers @nextcloud/server-frontend

Goal

The goal is to agree on a line to follow from here. If the design team is ok with this:

1. if the mime is associated with a specific color, often provided by the org that created this file type, use it
2. else, fallback to a default #969696 grey
3. if folder, we always use the primary color