One Piece elemental HaKi power system according to me

:
+ Imu: Black Flame - Maki - Demonic Energy - Metal - Black Sun.
+ Luffy: White Flame - Shinki - Divine Energy - Wood - Sun.
+ Shanks: Purple Flame - Tenki - Heavenly Energy - Water - Moon.
+ Zoro: Green Flame - Reiki - Spiritual Energy - Earth - Planet.
+ Sanji: Pink Flame - Seiki - Life Energy - Fire - Star.