My hair is virgin, light to medium blonde, and very fine, and I am considering trying cassia or henna to help with strength and condition, but I'm kind of terrified. I love the colors everyone on here achieves with henna, but I have no idea what shade would go with my skin tone (I have gray eyes and blonde hair, but I think the veins on the inside of my wrists are both blue and green--go figure), or if red hair would look absolutely terrible on me. If I go with cassia, I'm scared that it will make my hair too brassy or yellow.

Do any of you henna/cassia users have lightish blond hair naturally? What were your results?

TIA