In that case, you could select a range then run the following macro via a suitable shortcut key combination:
Code:
Sub ResetShading()
With Selection.Font.Shading
.Texture = wdTextureNone
.ForegroundPatternColor = wdColorAutomatic
.BackgroundPatternColor = -721354906
End With
End Sub
For PC macro installation & usage instructions, see:
http://www.gmayor.com/installing_macro.htm
For Mac macro installation & usage instructions, see:
https://wordmvp.com/Mac/InstallMacro.html