First, look at this post related to creating a metadata dropdown, where you might have a robot/traffic light type icon, instead of specific text colour: List question - #6 by MimeticMouton – so your custom metadata item might be Lore with two or more options.
It may be a way of getting past why your text reverts to black because you appear to have made the right Compile > Options > Remove text color (untick) choice.