Which part are you having problems with, showing them, or them not being in red?
For showing them, I think your thread from 2014 has the answer:
For the color:
Preferences / Display / Colors and Fonts / Files and folders - System
Which part are you having problems with, showing them, or them not being in red?
For showing them, I think your thread from 2014 has the answer:
For the color:
Preferences / Display / Colors and Fonts / Files and folders - System