I am very worried that a reduced colour palette (as announced on Confluence Cloud Roadmap https://tinyurl.com/y6lsda92 ) ** will be a HUGE backward step in our organisation ... verging on a disaster for the corporate image if that change is also being considered for Confluence Server.

Most organisations have spent a LOT of money investing in a corporate image which includes certain colours.  Quite often organisations want colours for certain text (chapter/section headings etc,) with a very specific RGB colour assignment.  In other cases User s just want full "creative control" over basic text format.

So I would suggest that a the colour palette be enhanced to provide full RGB control