Change background color of inside of layout panel

I have a layout object, which has five panels. One of panel is attached with grid object. When the grid only has one row, the rest of panel show background color as white, I think it’s default, I didn’t modify it, I didn’t setskin for this layout either. What I want is change the panel’s background color dynamically according to some work flow. But right now, I can’t even find way to change the color when initiate it.

You may redefine the following css class to set another background for a grid:

div.gridbox .objbox {

Or = “#ffffff”;

That works pretty nice. Thank you very much, Alexandra.