XY Chart - background color

Hello. I am trying to change the background color of the actual series on the chart with no luck. All the style background colors I see are the surrounding space of the chart.

image

Do you mean the chart series fill color?

If so that's set in the chart's properties here:
series.0.column.appearance.fill.color

that fill color is the red in the actual column. I mean background color of the graph. right now it is white.

Set as follows:
background.render : color
background.opacity : 0

Where can i find these? I can't seem to find them. thank you!

Select the XY Chart.
Those are properties in the Perspective Property Editor.

XY chart background

thank you!