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.

For more instructions on electroplating see the following two posts:
Plated fabric traces >> http://www.kobakant.at/DIY/?p=2977
Electroplating >> http://web.media.mit.edu/~plusea/?p=554

Plated Cobaltex conductive fabric:

Plated stretch conductive fabric:

Plated conductive thread 4ply silverized nylon:

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: