Simple Contour Icons
Simple Contour Icons known from the old days.
It provides you a color scheme what let you see on the first view how many tanks of a specific tank class are in your battle. Also you see from what nation these tanks are when this becomes important in specific events. In addition the golden badge let you identify special & premium tanks.
Copy the file to the /mods/188.8.131.52 folder of your World of Tanks client.