Chart transparency problem

I have an XY scatter chart on one of my reports where some of the data points
either partially or completely overlap one another.
I've setup my chart value markers to have a transparent fill so that users
can see when two points overlap. My problem is that when reports are viewed
each data point is displayed with a solid fill for some reason. I've tried to
manually edit the RDL file and add a BackgroundColor value of 'Transparent'
however I get a build error when I do this (Transparent is not a valid
background colour).
Any ideas.Just found this in the SP1 release notes:
"A fill color of Transparent will cause the chart elements to display using
the automatic color assignment from the chart palette. "
Explains why my data points are not displaying with a transparent fill but
is there any way to fix this?
"Martin Hinchy" wrote:
> I have an XY scatter chart on one of my reports where some of the data points
> either partially or completely overlap one another.
> I've setup my chart value markers to have a transparent fill so that users
> can see when two points overlap. My problem is that when reports are viewed
> each data point is displayed with a solid fill for some reason. I've tried to
> manually edit the RDL file and add a BackgroundColor value of 'Transparent'
> however I get a build error when I do this (Transparent is not a valid
> background colour).
> Any ideas.