Main forum title stays grey in every theme

The theme has been changed, that is not so difficult and I have downloaded more themes to look why the Forum title the main one would turn into an other color but stays with every theme style grey... where or how can i fix it into Bold and White??? they still alre linkable and grey need to change it into white... does anyone know where to do that in the code?

For the rest there are still some bugs, private messages will not work 404 page, and the avatar can't bechanged by everyone.