black or dark brown depending apon the flea
COLOR
The most effective methods for indoor cat flea prevention include regular grooming with a flea comb, using flea prevention products like topical treatments or oral medications prescribed by a veterinarian, vacuuming and cleaning the home regularly, and washing bedding and furniture where fleas may hide.
it changes its color
with their fur
A bug that resembles a flea with wings may have a small body, jumping ability, and wings for flying. It may also have a similar shape and color to a flea, but with the added feature of wings for mobility.
it changes its color to hide
brown and pink hide
black
it changes its color
Black color hide content and White reveal but on layer which have layer mask, if you want to hide content then create mask on layer you want to hide content and paint with Black.
Ninjas had no "color", they wore whatever color hide them well in their environment.
most animals that live there are the same color as the alagae that grows on top of the water. they use their body color as a camoflouge to blend in and hide from predators.