An error occurred while saving the commentDuley117 commented
Came here with the same issue but actually found a backway to solve. If you select the box of text (as if you were moving it), all text within should be highlighted. While highlighted, select Insert>Table>1x1 row/ column. This will turn the box into a table that can be formatted freely. Then use the Table Layout ribbon to change the box of text to have unique background colors and borders.