At least, according to Microsoft Word 2016 Preview Edition.
This is the first few dozen pages or so of my manuscript for Icarus Down, after we’d been through initial editorial comments and revisions earlier this year. The blue represents text I’ve changed or added. I don’t know why Word selected blue as the colour of revision, or why it sometimes changes that colour when I shut down Word and open it again. Red would have made more sense, I thought, but oh, well.
I’m getting used to working with Microsoft Word track changes, and zooming out to 10% really gives you a sense of the work you do.