You need to identify the cell that has been selected.
Code:
With Selection.Range.Cells(1)
.Range.Characters.First.Font.ColorIndex = wdGreen
.Shading.Texture = wdTextureNone
.Shading.ForegroundPatternColor = wdColorAutomatic
.Shading.BackgroundPatternColor = wdColorOrange
End With
You can if you wish change .colorindex to .color. The .color property has been deprecated so no longer shows up in the intellisence but is still a fully functional property.