What causes Vertical Stripes in GS/OS 6.0.1 desktop?

[mk_Dubrow@no-spam.hotmail.com (Rob)]

My GS monitor died so I hooked my //gs  up to a 32" Panasonic TV.  I"m
using an RGB to Component video encoder with an adaptor cable I wired
up to hook it to the  YCbCr inputs on the TV.   It looks great.  If
you haven't tried it, playing GS games on a large monitor is like
night and day in comparison to an old, small GS monitor.    40/80
column text looks fine;  Apple II HI-Res games, DHR games, and GS
games all look good. ...but the GS/OS desktop looks absolutely
terrible.  The blue background and all folder icons have these ugly
vertical strips or banding.   The stripes do not appear in any text or
white/black portions of the display, just the background and folder
icons.    Anyone know what is so special about the GS/OS desktop that
might explain this?   Is it at a different resolution then most other
GS apps and games?  Can this be changed?  
 I could probable live with it but it's just odd that everything looks
so nice and clear except for the GS/OS desktop.