You certainly can change the "None" style but I think it is not good to leave text in topics with no style assigned to it. When assigning things like bullets using the formatting toolbar icon it applies a "None" style forcing you to select a style (e.g. Normal). See here for further details (look in the RH8 section).
If you want to change the "None" style, expand the "Other" styles section of your CSS file. In there is a "Background + Text [Body]" style that can be changed. It is this style that is used by the "None" style.
The RoboColum(n) @robocolumn Colum McAndrew
I've read Peter's wonderful information and realize that we need a style attached....but...if we miss it I'd like to not pay such a heavy penalty...! This should do the trick. I will play with it and see if I can ease the pain a little.
Thank you for responding quickly!!