Upgrading idea

I've seen tens of threads asking for a way to show what troop is upgrading in the lab. A main problem, although, is the way it would be displayed, as in it would be awkward to have the troop icon over the lab.

My idea is to have the troop that is currently upgrading glow red or another color in the player profile. This would make it easy to see what is upgrading in a base without having to ask them. If no troop is upgrading it would look normal.

If say, your balloons are upgrading to level 5, it would have a 4 in the corner and the balloon icon would be glowing red.

Thank you for listening!
~Allinone27