Changing Header Text Color

How can I change the Header Text Color?
I’ve tried to follow the past thread modifying the Custom CSS like this:

/* correct issue that text formating is not working */

@import url(http://fonts.googleapis.com/css?family=Lato:700);

/* Vantage Site Title Color */
header#masthead hgroup h1 {
color: #1e73be !important;
}

/* Vantage Support Text */ 
header#masthead hgroup .support-text { 
color: #1e73be !important; 
font-style: bold !important; 
font-size: large;}

but text still grey.

Thanks

Davide

URL: http://systeminn.bugs3.com/