Hello,
Fireworks is specific template in point of heading colors, on color is used for example for h1 and h3, other is for h2.
You have option for text color in template settings, but not strict described what heading (depend of version of Joomla you are using, and template for that version too).
If you want to add color for certain heading, you can put something like this on bottom of template_css.css which is located under your template_folder\css:
h1{
color: #ffffff!important;
}
and this is just example, you can do that for any heading you want.
Regards
