the combination of dyes to make a chaos axe go black.
( assuming its possible ).
Heres a list though of the basic dye results
Blue............Red / Pink Axe
Green..........Purple Axe
Orange........Green Axe
Yellow.........No Change
Red............Green Axe
Purple.........Orange Axe
Silver..........White faint tinge of purple/pink
Black...........White (with white glow)
most results I had from mixing dyes so far were
disturbing radioactive greens and bright reds and pinks

So please, If anyone knows the mix for a black chaos axe, let me know.