Halion 6 Interface colors

How does one adjust the interface color scheme? I think I did this once, and chose the cool sleek black look. That was fine until I needed to actually see the menus. 6 pt. fonts of dark gray against black isn’t working for this old man. I tried the program help, but that doesn’t help either. I’m pretty sure I changed it once, but, hey, I may not be remembering this correctly, either! :unamused:

Anybody help?