Boy! Talk about making something simple really complicated!
All I need to do is change the default text in the drawing markup callout text box from red to black, and then make it default. The red text is too hard on the eyes. This used to be a routine effort, but the new Acrobat is not for those who need to work, and is better suited for those who have a need to put thier fists through walls. I've already discovered how to change the border and fill colours, and that itself was a time-wasting exercise in frustration, but why you now have to do something else to deal with the text is all part of the beautiful mystery of Acrobat. I'll wager that it now takes six steps, rather than the one that it should take. Can you tell I'm a wee bit put out?