That’s not exactly the case,
Continuing the discussion from Releases Rules and FAQ:
Users may not RELEASE default resource replacements, specifically on the CFX forum. There is no indication that these resources may not be discussed/helped with.
As an answer to the OP’s question, if I understand it correctly, you can use this website Text border using css (border around text) - Stack Overflow specifically the section that mentions “text-stroke” and attempt applying a text stroke value to your .css
Something like that should be fine to add to the main * section I believe, but you may have to do testing on where exactly it should go.