To keep the screen from becoming cluttered, the hitzones are not always visible. According to the World of Tanks Portal , the markers appear based on your viewing distance:
The mod uses a specific color-coding system to indicate where players should aim for maximum damage or tactical advantage: Most vulnerable spots for penetration. Pink: Ammo rack (Ammunition storage). Green: Engine. Blue: Fuel tank. Yellow: Crew members. White: Indicator for the tank's "top" gun. Zoom Activation (Distance Limits) BarevnД› ЕЎrafovanГ© hitzony (0.9.13)
First appearing for game version 0.9.13 around late 2015, this mod was a staple for players aiming to improve their technical gameplay by targeting specific weak points during combat. To keep the screen from becoming cluttered, the