In Setup/Setup subfolder there should have been a file called "TextBG.png"
should also be a sction in setup.ini
Code:
[TextStage]
Top=150
Left=300
Width=400
Height=300
SpaceFromBorder=5
Center=1
Font=Calibri
FontSize=1
FontColor=$20A5DA
which is where you specify that box, below is what it looks like. Added file below...