Conductive fabrics and threads can be plated without having to first coat them in conductive paint because they are already conductive! It can be a great way to make a conductive fabric solderable to then make a robust solder connection to a soft fabric circuit.
Here are some examples of different conductive fabrics and threads and how they plate.
Plated stretch conductive fabric:
Electroplated steel and wool yarn blend:
Plated steel and wool yarn blend knit:
Soft&safe conductive fabric before and after plating:
Plated Veilshield conductive fabric:
Red leather coated in carbon paint and then plated: