How do I add category colors as background behind each event in the events list?

I have already add a field in the categories table to store color (hex). I have already modified the admin screens to request and post a color which a category is created or modified and I have already added the colors behind the categories list in admin.

BUT I have been unable to figure out where (which file, which function, etc) to make this modification for the events themselves, particularly in the events list.

Any help would be appreciated.