Export Wind Rose - Transparent Background/Imperial Units Vasari Beta 3

Has anyone figured out a way to export the wind rose diagram from Vasari Beta 3 with a Transparent background? As a consulting engineer, this would be extremely useful in presentations and conveying to the client the wind patterns while still looking uniform with the presentation set up.

Also, It seems the Wind Rose is only in Imperial Units. Is there a way to change this?

You can set the wind rose to overlay on a map or over the model. If you don't have anything in your model, the background will just be white. Note that you can also import the wind rose to the model. If you start from a metric template (easiest way is from the recent files page) the wind rose should show metric units.