Changing text color and the special issue this represents for Mac users.

Thunderbird 68 removes the limit on the number of colours available and now offers whatever the operating system of the device offers.  This is usually more than 60 million.


You are using Apple,  the complex things you see are part of your apple operating system.  Windows users see a colour picker that they pick a colour from because that is the tool windows offers up when asked.

Both operating systems should put up an equivalent to this

The windows dialog you see when you click the colour bar to set another colour looks like this

Apple has something that looks like this as their operating system colour picker

They offer instructions here on using this part of their operating system.

The special problem MAC users appear to have is they do not close the colour picker dialog and then complain that the colours in Thunderbird do not update. So, close the dialog.  That is all you have to do to make it work.