Here's why:
* Ancient Art: While there are countless depictions of Venus in art, there's no consistent portrayal of her hair color. Some sculptures and paintings show her with blonde, brunette, red, or even black hair.
* Mythology: Ancient Roman mythology doesn't explicitly describe her hair color.
* Interpretation: The interpretation of Venus' appearance has changed throughout history, influenced by different cultural ideals of beauty.
Therefore, it's safe to say that Venus' hair color is left to artistic interpretation and imagination.