zwall-border-color, zwall-color attribute

Used By:Graph elements except piegraph
See:floor-color ywall-color zwall-grid

The colors to give the Z wall of the graph, if any. The Z wall is the wall "behind" the objects in the graph.

You can set the color and border color, or just set the border color for a grid on an otherwise transparent wall - although the grid can be modified with the zwall-grid attribute.

The draws a gray wall with a black grid

<bargraph zwall-color="gray" zwall-border-color="black">