blackground on emoncms

Hi, I'm working with emoncms, I think it is easy but I don't found the way to put a blackground. Somebody can help me?

I'm working with emoncms

So, one of you knows what you are talking about.

I think it is easy but I don't found the way to put a blackground.

Not have you defined what a blackground is or where you want to put it.

Somebody can help me?

Not yet.