I can’t change the text colour in the primary widget area, secondary widget area and footer widget area. I have tried Theme options -> Main Options -> Sidebars&Layouts -> Primary Widget Area Text Colour etc. or -> Footer -> Footer Widget Area Text colour. I can add shadows, borders, etc but can’t change font colours and background colours.
Check to see if you have a color assigned in the “Individual Widgets Text Color” field. If so, delete it and leave blank. The widget body text should pick up the color assigned in the “Primary Widget Area Text Color” field.