Soot flakes
Soot flakes is an optional effect of Sooty
The minimum requirements of Sooty must still be met regardless if Soot flakes is shown or not.
Soot flakes is not listed in the phenotype, a Sooty with Soot flakes is still only written as Sooty.
Appearance
Sooty can optionally have soot flakes or "grease spots", causing dark smudges or spots in the coat. The spots can have soft or sharp edges.
Soot flakes are always darker than the coat, and can optionally affect mane and tail.
Eye colour:
Doesn't affect eye colour.
Skin colour:
Doesn't affect skin colour.
Horn/hoof colour:
Doesn't affect horn or hoof colour.

