The short answer is "you can't." Once you "accept all the changes,"
Microsoft Word does not track them any longer. An accepted change is not
distinguished in any way from the original text of the document.
You can, however, hide everything but the color change. Go to the Tools menu
and select Options - Track Changes.
Set Insertions to "Color only."
Set Deletions to "Hidden."
Set Formatting and Changed Lines to "(none)."
That will give you a printable document that will show new text in blue and
will show no other markings for the changes. Unfortunately, if you give the
Word document to anybody else, all tracked changes will still be available to
them.
Your only other option is to re-format the text by hand. Go back to your
options and set Deletions to "Strikethrough" and then TURN OFF CHANGE
TRACKING. Then, on the Reviewing toolbar, use the blue "Previous" and
"Next" arrows to scroll through the document from one tracked change to the
next. If the tracked change is an addition, set the font format to blue and
accept the change. If the tracked change is a deletion or format change, just
accept it.
That's a painstaking process, but it will leave you with a document that
shows your changes in permanently blue text.
I hope this helps.
Fred