Two of the deleted messages on here are blue because they were posted by and then deleted by Rebecca. She was checking whether it was working at the HQ end but it wasn't. At least a couple of the other deleted messages on here were deleted by her (others are just larking around posts) and they don't have the grey background they should have.
Zombie hasn't noticed any Message Deleted messages anywhere today. Perhaps there just haven't been any on the threads she's looked at or perhaps it's because they aren't grey and Zombie just overlooked them.