Changing the color of the title in the question in the Community Survey

As I can change the color of the title, image is appended.

I want to change the blue color for another

in another question I found this route:

/media/com_communitysurveys/css/cj.surveys.min.css

but I do not know what I should modify in the file to change the blue color

I use version 5.0.8

Thank you