I don't know if that is a command, as such, but commands can be added if you can find them. Look under all commands. There are a lot of commands.
I don't find it, but the following macro works:
Code:
Sub ColorGreen()
'
' ColorGreen Macro
'
Selection.Font.ColorIndex = wdGreen
'
End Sub
See
Installing Macros if you need help adding such a macro.