Personas change the text color of the top and bottom of the Firefox window as well as apply an image. This is set by the designer, and there is not currently a way to change it. You can, however, prevent the text color from changing in the first place if you are using the Personas Plus extension.
Prevent changing text color
Personas Plus allows you to prevent text color from changing.
- If you do not have the Personas Plus add-on, install it and restart Firefox.
- Click the Tools Menu
- Click Personas
- Click Preferences
- Uncheck the "Use Text Color" box
From now on, your text color will remain whatever color it currently is.