Not sure if u r still looking for help with this but just in case u r, I have attached a file with my solution.
LOAD * INLINE [
This setting should color bars RED if they are ON OR BEFORE 40688 (5/25/2011):
Chart Properties >>Expressions>>Background Color>>if(created>=40688,RGB(300,0,0),RGB(0,300,0))
This setting should send caseid created LATER to TOP of chart:
Chart Properties >>Sort>> Sort by>> Y-value (Descending)
This setting should help show "X" axis labels more correctly:
Chart Properties >>Axes>>Expression Axes>>Forced 0 (s/b UNCHECKED)
I am a novice just trying to give back to the community.
Hope this helps!