I make stationary but have managed to do something stupid somewhere!

I am taking some more stationary making tutorials - I did some a year or so
ago.
The lessons get you to change the source code by clicking on 'create a new
email' in Outlook express, clicking on 'view' and checking 'source edit'.
Then I click on the 'source' tab that appears at the bottom of the new email
window.
This should show the html code for the email (or stationary, or whatever).
But instead of the text being black, it is white on that tab so I can't see
it, although I know it is there as I can copy and paste it into Notepad.

I have tried several things, even changing the text colours on the Display
tab so that none are white but no luck!

I know I can edit the stationary through notepad but it would be so much
easier to flick back and forth between the edit and source tabs to see what
is happening rather than opening up a new email each time I have changed the
code and saved it in notepad.

I am reasonably experienced in using my pc but may need pointers in finding
where to go.

Thanks for taking the time to read this.

from Desperate Jenny in the UK