Target indicator / diamond / player name color?!?!?!

[Dogtor Pupper]

Ok, I played this game since realease, stopped in 2018, now I'm back. Years ago, somehow I changed the floating diamond of party member to red color. I have no idea how I did that (console? config file? no idea) and today after joining some damn server with stupid mods it's gone, party member has blue or green diamond. Google, chat GPT... they don't have a clue how to change it. Tryed every phrase I could think off. The sv_hud_targetindicator_party_color command is not working because it's not client side. cl_hud... there is no such command.

QUESTION: How the F*** I changed that and how can I do it now?!