Half Staff – why is the US flag at half staff?
halfstaff.co
halfstaff.co
The people who want to know if it should be flying at half mast are more likely to care that the US flag being accurately represented.
I'm probably going to have to find a designer. :)
I agree with the others -- the one you have isn't really appropriate for such a solemn subject.
For example: http://portal.ct.gov/flag-status/
As far as I know, states can lower their flag independently from the US flag, but according to flag code cannot fly their flags higher than the US flag, so if the US flag goes down both do. Some states will explicitly lower both, essentially voicing support for whatever reason the US flag was lowered, and sometimes they lower theirs simply citing the flag code. The flag code isn't law though, so it's not technically "illegal" to break.
So, for those locations it seems mandatory. But the flag code that states things like that state flags should be flown lower that the federal flag is codified tradition and not law, so technically states do not have to follow, as far as I understand.
Do upgrade your flag. Make that a high priority.