[horde] changing appearance

[J. Duke Rogers]

Hi,
            I'm using horde, imp, and turba.  The FAQ says to change the
appearance u edit config/html.php and app/config/html.php, but that says
for 2.x, nothing is listed for 3.x. anyway I tried that and nothing
looks like it has changing. eg. I've tried to change the background
color globally and I see no change..  
 
Thanks,
-duke