If you are having trouble seeing this, you are on the dark setting for FA's skin, please go see Anahuyu and Crystal's children's colour chart with background.

This was done up for Mara The Soul Eater (Ttohiroabuni) so that she could colour the image of Anahuyu Izimori and Crystal's family.

Anahuyu, being the comedian that he is, produced children of vibrant colours and gave them names of minerals. Why the names of minerals? Becuase their mother's name is 'Crystal'. To further his 'joke', the children's names match their colours, too some degree. If you're wondering about brimstone, which should stand out due to Brimstone colours not matching the mineral, it's becuase brimstone is from volcanoes, and it's the colour of black rock with heated cracks.

The division line divides the first… Litter from the second.

Here is the guide:
Name | Primary | Eyes | Secondary | (First letter of gender)