Options are –

Title: Changes the title of the widget
Color: Changes title text color
Testimonial: You change testimonial text from this section (this field accepts html tag)
Name: You change name text from this section (this field accepts html tag)
Text Color: Changes testimonial text color
Widget Background Color: Changes entire widget background color
Container Background Color: Changes only widget container color (default container color is white)
Note: These fields accepts html tags. Meaning you can bold, underline, italic, hyperlink texts