I have 121 karma as of this writing and I don't see anywhere to change the color in my settings. I didn't even know this was possible. I have a custom CSS file

I have 121 karma as of this writing and I don't see anywhere to change the color in my settings. I didn't even know this was possible. I have a custom CSS file using Stylish and my HN is mostly greyscale. (Topcolor is #AAAAAA.)