how to change Foreground color for Buttons, Checkboxes, Combos

[eduard-schwenk]

i know, it's no longer maintained, but I have a question regarding Foreground color:
i've tried to extend some controls with different color for disabled state,
they don't react on foreground colors in style-triggers.
They also not reacting if i just set <Button Foreground="Red" ...
only TextBox respects style for foreground color.
Where can i extend the button with different foreground-color for the isEnabled="False" ?

Thanks in advance!