More default colors for event group headings and comments

I would like to have more (editable) default colors for event group headings and comments. I would like a change in color from nested event groups or nested comments. About 3 deep should be enough. I noticed on the videos that there were blue event groups and purple ones and also the yellow comments. I was wondering if it was automatic since a lot of videos had these. This is just so at a glance I know what event group or nested comment belongs to what. I like the feature of editing the default colors, but I would also like a few more, so I don’t have to do it manually every time. If not separate editable defaults (where instead of one color for event groups and just one for comments), then maybe shade them darker for nested comments and event groups.