Hello there!
My name is Dave and I recently started using Codoforum. I need a litte bit of help, cuz' I'm kinda new.

I'm trying to find a way to use colors for each role in part. I found a plugin on GitHub, but I have no idea if it works, how to install it. (LINK: [codoforum-colored-roles] )
If there is another way using colors for roles, I would be very happy to hear some opinions.

I had a look at the plugin's source code.
It looks like the plugin is still a work in progress.

you just need to download the zip from the repository.
and unzip it inside site/default/plugins
now you will be able to enable it from the backend.

What colour are you trying to change?
is it the colour of the username?