The Editor font field displays the font that TextFlow uses to display text. Click on the button to specify the font type, style and size for the text.
The Color Schemes list shows all installed color schemes that TextFlow can use. Click on some item in the list to change the color scheme.
Use the Add button to install a new color scheme and use the Remove button to remove the selected color scheme.
Note
All color schemes from gEdit can be used in TextFlow. You can get they in: http://live.gnome.org/GtkSourceView/StyleSchemes