kde4 alternate Background

Hi!
Hopefully this is not the wrong list:
(But..) i have a question about color-schemes.
On KDE3 i had on my "kdeglobals"
a line like:

[General]
alternateBackground=32,32,32

this is because of eye-handicapness and a white/black color-scheme. But 
now it does not work anymore. So my Colors alternate between black/white 
ande white/white each line on some/most programs, like dolphin/konqueror 
for instance. How and where do you can change the color propertie of the 
earlier so called "alternate Background". As far as i knew on kde 3 
there was no menu for changin. The only was was to edit the "kdeglobals" 
. But now it does not work any more.
sorry for bothering, but surfing on the internet with this scheme is 
near to torture ;-)
Kind regards
Martin