[gtkmm] Label not changing color

[Bill Dewey <wdewey1 comcast net>]

I am trying to change the color of a label and I got some help with this 
from this list.  The code I am using complies fine, but the text color 
does not change.  I have tried changing the color in all states, but 
that didn't help either.  I am using:

Gdk::Color c( "red" );
myLabel->modify_text( myLabel->get_state(), c );

I have tried running this from a menu item and in the constructor for my 
window (which is where the label is created).  I don't know if there is 
some default style that is overriding it (I have not created any style 
type of stuff yet).  All the code becides this has been generated by 
glade.  Thanks for any help given!

Bill Dewey