The yellow-on-add and red-on-delete thing

After watching admiringly for a while, I just want to put this into print, on the off chance that the responsible persons will see it: The behavior in this WordPress support app where additions go yellow and then fade, and deletions go red and then fade, is a high point intersection of cool, functional, and innovative. (Makes me wanna get a cup o’ java and just add and delete all day….)