Left cast with a combination of orange-red and bright white gitd powder. The bright white has a bluish hue so I combined it with the orange to get a green. Otherwise tentacoil is pigmented with fluorescent green liquid pigment and marbled with metallic green powdered pigment. Mouthful.

Right is cast with my brand new yellow-green gitd, otherwise is fluorescent green liquid pigment and metallic green powder.

Left has a warmer tone due to the orange-red glow in the dark powder actually being colored. All of the other gitds were 'invisible' or a white powder, so didn't affect overall casting color.