Color that symbolizes rebirth?

I trust blue will do because I believe water can do.

Red represents blood, so certainly not red.

Rebirth is related to life, life is related to nature, and nature is usually thought of as plants, and most plants are green, so green could symbolize rebirth.

Light yellow/White.

Almost a cream color. It's plain, and refreshing.

Yes I would think white too, it's a pure colour, like starting again or starting afresh.

As opposed to plain birth?

Most born-agains use white.