For the RadHtmlChart I was wondering if there is any way to change the background color of the main chart area only like you could with RadChart?
Appearance.FillStyle.BackgroundColor controls the background to everything including legend, title and axes
PlotArea.Appearance.FillStyle.BackgroundColor colors the main chart area AND the area behind the y-axis labels which looks a bit odd. I've attached examples with RadChart and RadHtmlChart for comparison. We'd like everything but the main chart area to be transparent so whatever is behind the chart can be displayed, in this case a gray RadDock.