I discovered leiningen ultra plugin, which provides a colorized REPL amongst other things: <https://github.com/venantius/ultra>

However, the colors, especially the "blue" for function symbols are not very readable in my terminal with the black background.
I'd like to change the colors but wasn't able to do this following the documentation.

I added following configuration to my`profiles.clj` right under the `:user` key, but nothing has changed

```
:ultra {:repl {:color-scheme {:function-symbol [:red]
                              :class-delimiter [:red]}}}

```

Any ideas what I'm doing wrong?
Has anyone been successful in setting custom color scheme?