Reply to APC LED Mapping

I had a great idea for my mapping of my APC but after looking over the available LED OUT functions I don't believe it's possible so I ask you if anyone knows if it's even possible or better yet how to do it.

Currently I have a button solid green when playing a deck. I would like for it to blink green when a deck is not playing BUT there is a track loaded into the deck. I'm pretty sure I can do this with the new Loop controls but I would like this for my A & B deck also Thanks in advance for all the help.