Interesting fact:
The reason why Virgil's hair is white and Dante's hair turns white when she's powering up is because Dante's normal power level is really high and she doesn't  need to power up to fight usually. Virgil's normal power level is actually really weak. So she stays powered up all the time to try and keep up, but she doent tell anyone. So Virgil's hair is actually black just like Dante's.