Hi!
There is a custom CSS in your site header that overrides all link colors to the same color as the background of the results. This is it:
[html]a:link {
color: #6d4780 !Important;
}[/html]
This is causing the invisible title colors. The simplest solution is to add another rule to override this for the search results with the white color:
[html]div a.asp_res_url {
color: #FFF !important;
}[/html]
This will make sure that the result link colors are forced to white. A more elegant solution would be to change the original rule to not affect certain elements, but this will work just fine as well 🙂