K-Mail display issue

[phillips88 at gmail.com]

KDE 4.4.1, KMail 1.13.1

Mandriva Linux 2010.0

KMail has alternate white and blue lines for every second entry in the folder 
pane and header pane.

I would like to remove these blue lines, but how?

Obviously (to my challenged mind) a display issue, but how do I fix, or how to 
configure the display in Mandriva?  I have tried many combinations, obviously 
none of them correct!

T.I.A.
-- 
Regards,

John Phillips
Sydney, Australia
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