For the styling, you can add your css in
Theme Options > CSS and that style will take effect globally in your site.
You just need to know your page header text class then use that class to style it.
For example, if your header text has
You can change the color by adding this in
Theme Optins > CSS
That will make the color of your header text to red all over your entire site.
For more information kindly check the videos below
Hope this helps