Speaker cables for Focal 1038 Be?

I would avoid avoid silver because the Be tweeter is hot enough as it is, but you never know for sure until you try it in your own system. The best advice I can give is to get some loaners from your dealer and hear for yourself.

What sound characteristics are you looking for?

My best cable for Electra 1038BE is the Mogami W3104.

I would avoid silver too.