How to change Font Style Pattern

ellegregory 

Your screen shot suggests that one or more paragraph styles have acquired character shading. 

As a start, try modifying the Normal style. Doing so may suffice, since Normal is the based-on (parent) style of many other styles in Word. Do the following: Select a single word which is shaded (in a paragraph in Normal style). Go to the Borders and Shading dialog box and click the Shading tab. Choose the "No Fill" option, even if it already appears to be selected. Confirm the setting with OK. Then, in the Styles pane, use the Update Normal to Match Selection option.