Secondary Runes Have their Own Color
Primary Runes each have their own color for precision (yellow), domination(red), resolve(green), sorcery (dark blue) and inspiration (light blue).
For secondary runes they are all just yellow. It forces you to know what the weird symbols mean for what secondary rune people took. It would be much more noticeable and easy to read if you color coat them with the runes normal color yellow red green dark blue light blue.