Accent light color for dark skin tone?

Hi all - I am going to be shooting a portrait of a dark skin woman soon (will be using a black backdrop). I will be using one softbox with grids for the main light.

She is bald and I want to provide some accent lighting / rim lighting on the opposite side.

What is a good accent light color for this? Any samples too would be appreciated.

This is an important photo for me as this is an old friend of mine who is battling illness right now so I want to make a great portrait.

Thanks in advance.

--
Pak K So
'Enjoy your life, guy'