Change Color of Header

[Connie]

I am sure the color is defined in the CSS of the theme

in the default theme, Innovation, the title (which is always a link to the homepage) is defined as a#logo

which means, it is a link with the ID "logo"

in the style.css of that theme, I find the color-definition:
header #logo {
....
color:#fff;
...
}

so you would change the color here, if you use Innovation theme

you don't tell us which theme you use (standard themes are only Cardinal and Innovation)
but the header of your site shows that the css-file is this one: nivo/themes/default/default.cs

so find out which css class or css id is defined for the title and change the color in that css file
or tell us which css you really use and we will find out what is to edit / modify

Cheers,

Connie