Disabling blur overrides 0 saturation, try it yourself, you'll see the background as it is, this patch makes it more ala Symbian^3 or MeeGo, a bit more resource friendly.
Oh and here's a deb with this applied on top of
http://gitorious.org/community-ssu/hildon-desktop
http://mohammadag.xceleo.org/public/...rize_armel.deb