Agreed. Just tried it and it does NOT screw up the background on all pages.
FYI, if you goto that XDA thread, they have updated to the FINAL version. That's the one I am using and it is working great.
**EDIT**
Actually it's not perfect. For some reason, the clock in the upper left doesn't match to the white background correctly. The text is shifted too far to the left because it is missing the leading 0 (it's 7:45 am here).
**EDIT2**
Nevermind gotta change the time display in regional setting to add the leading 0
Everything is good.