I would like the current directory in my fish prompt to be light gray, as it was in bash before I started using fish. I tried running set -U fish_color_cwd white (since white is the closest color to light gray that is listed in the set_color documentation) and it didn't do anything. The text was green after, just like it was before.

I then tried set -U fish_color_cwd red to see what happened and the text turned red, like I expected. Then I tried set -U fish_color_cwd white --bold and it became bold, but green again. It seems like it understands all of the colors I tried, but not white.

I am using fish 2.3.0 on OS X 10.11.5 and the built-in Terminal. Here is a screenshot demonstrating what is happening: