As she was, back when she had youngsters to deal with:
|In berry, last May|
The other three shrimp that came home with her have all turned red as they grew, with the largest being the reddest. All four are semi-transparent against a bright light. In the wild, that gives them double-duty camouflage; they're dark and mottled, as a fish would see them from above, and blend into the patterns of the sea floor. Seen from below, as by a crab, they match the light from the sky.