Looking for a good solution to cover my TV between the speakers. Cant move it

I'm unable to move my large tv out of the area where my system is and I need a (Good looking and effective) solution to cover it to eliminate the unwanted high frequency brightness it causes. It is a 60" TV. The front of my speakers are about 1 ft in front of the edge of the glass of the TV. This helps somewhat. 

Is it best to put some sort of diffusion material over the TV or some absorption material if I can't move it out of the room? What ever I choose needs to be easily removable. 

Appreciate any help!