change text in button

[calmar <mac calmar ws>]

Hi,
I have a button with the text build like this:
gtk_button_set_label(GTK_BUTTON(button), text);
gdk_color_parse ("red",&color2)
gtk_widget_modify_fg (GTK_WIDGET(button), GTK_STATE_NORMAL, &color2);

I can not change the color of the text (only when I click on the 
butten..the 'markes' that the button is selected are 'red' then.)
How could I reach the label in the butten in order to change the color? 
something like this button->label ?
Or maybe I need to create a new label, and 'give them the color and pack 
it' again into the button?

thanks a lot for any advises!

calmar