The color of TF2's eyes is purple due to the game's design choices and visual style.
The color of TF2's eyes is purple due to the game's design choices and visual style.
While playing TF2, seeing someone's eyes turn purple when you look at them could be due to how the game handles lighting or shaders. Your i3-2130 HD graphics should handle basic effects, but if the visuals look odd it might be related to your display settings or driver configuration.
They aren't meant to be purple; it could be one of those indicators.