Text color change for page headers.

For whatever reason, I am unable to change the color of the text of my page headers. The regular content text changes along with the program, but the Home, Blog, Travel, Health, etc tabs at the top remain their default gray color. The site is teamnobaddays.com. I’ve tried adjusting every color option available, with no change in the header text color. Could something be wrong with the theme? I’m using vantage premium.

Thank you.