Suggestion for the champion mastery system - Mastery color overlays

I figure this would really only work for master 5 or higher. It should also be a choice for the summoner if they want the overlay. http://img05.deviantart.net/2e62/i/2016/310/0/3/darius_by_armand_anims-dank9jr.jpg?1

http://img09.deviantart.net/033f/i/2016/310/1/4/dunkmaster_darius_normal_loading_picture_by_armand_anims-dank7yd.jpg

http://img12.deviantart.net/f9ee/i/2016/310/2/f/riven_norm_by_armand_anims-dank88f.jpg

http://img06.deviantart.net/e43e/i/2016/310/7/e/riven_by_armand_anims-dank887.jpg

For every champion :D