Here's why:
* Visibility: Static electricity manifests as hair strands repelling each other and standing on end. This is more noticeable against the darker backdrop of brown or black hair. On blonde or red hair, the effect might be less visually striking, even if the same amount of static is present.
* Hair Texture: While hair color itself doesn't directly determine static buildup, it can be associated with certain hair textures. Fine hair, often lighter in color, is prone to static, but coarse hair, often darker, can also experience static, making it more visible.
* Dryness: Dry hair is more prone to static electricity. This is because moisture helps dissipate electrical charges. Dark hair can sometimes appear drier, leading to increased visibility of static.