You have other choices about the display of insertions, deletions, and formatting changes. For example, if you prefer inserted text to appear in italics, or with a double underline instead of a single one, you can make that happen. How?
Click the Show menu, and then click Options. There's lots to choose from. You'll see more about these options in the practice.
Note Once you change the original settings, the only way you'll get them back is to enter them yourself, so you might want to write them down before you change them.