Use opacity with FastColumnRenderableSeries

I want to be able to set opacity on a FastColumnRenderableSeries so that it doesn’t hide the values of other series rendered on the same chart. I have tried setting the Opacity property on the FillBrush but this is ignored. I have also tried setting the UIElement.Opacity property on the FastColumnRenderableSeries itself but that is also ignored.

Both FastMountainRenderableSeries and StackedColumnRenderableSeries can do this by setting UIElement.Opacity on the series itself but it doesn’t seem to work with FastColumnRenderableSeries.

Anyone come across this before?

I guess there is a workaround if you ensure your column series is rendered first, but this is trickier in my case as I am using databinding to populate my series and I don’t know until runtime what series will need to be rendered.

many thanks,

Bill