When Gemma came in, she was unhappy with the results of a previous coloring she did herself. She said the ashy blonde color was too ashy, and that she wanted something color to her natural color.
Yoshiko applied coloring with warmer tones to get the natural effect desired. A similar demi color was applied, and the result can be seen here.
When Gemma left Afrodita her locks were a darker color that give off a more natural appearance. We think that if someone ran into Gemma, they would not know she had colored her hair.