A family of Microsoft word processing software products for creating web, email, and print documents.
You can change the color by putting the selection in the text and the access the borders and shading dialog and in that dialog, changing the color
Doing it that way however, you are limited to applying the maximum available width of 6pt, which is somewhat less than the border that was there originally
If you want to keep the original dimensions, it is necessary to locate the borders in the document.xml file (accessible after changing the file extension to .zip and then extracting the files from the archive) and change the w:themeColor setting for the borders from its default “text1” to one of the accents such as “accent1”
It is then possible to manipulate the color via the Create New Theme Colors dialog for the selected Accent#