There are two main graund color which are white and yelow. Colors pigments disperse on main graund colors and these distribution determine the canary color. If there are not color pigments and canary color is white or yellow, it is called as clear
Melanin canaries have variegation.
Birds can be black melanin or brown melanin. In other hand, the these two color can be seen together.
If there are these two pigments which are black and brown on yellow graund, yellow feathers occur. It is usually called as variegation
If there are these two pigments which are black and brown on white graund, cloud color feathers occur. It is usually called as blue variegation
Brown+ Black pigmentation on yellow graund = green variegation
Brown pigmentation on yellow graund= cinnamon variegation
Brown+black pigmentation on white graund = blue variegation
Brown pigmentation on white graund = faw variegation