Here's why we can't know for sure:
* Shakespeare's Time: During Shakespeare's time, hair color wasn't often described in detail in literature.
* No Physical Descriptions: Shakespeare focuses on Tybalt's personality and actions rather than his physical appearance.
However, there are some things to consider:
* "Fiery" Nature: Tybalt is known for his hot temper and quick to anger, which might lead some to associate him with the color red.
* Artistic Interpretation: Over the centuries, artists and actors have portrayed Tybalt with different hair colors, including black, brown, and even blonde!
Ultimately, the color of Tybalt's hair is up to your imagination!