What is expected?
If diffusion and osmosis occur across a selectively permeable membrane are related to the substance the membrane is submersed in, then an egg submersed in green water will turn green as a result of the diffusion of water (osmosis) through the egg.
Variables:
Independent Variable: The substance the egg is submersed in.
Dependent Variable: The color of the egg.
Controlled Variables: The quantity of the independent variable.