The variables appear in a green font in our environment.
Also, when we initially set-up variables, we set their values
to their names. For example, CompanyName = CompanyName. Only later
did we fill in the actual desired values.
We managed to run a careful search-and-replace on all of our
files, to replace text with variables. It took some trial and
error, but it did work in the end. It was a lot faster than doing
this manually, that is for sure.