We can contol a bubble color by setting FillEffect when adding a new buble to bubbleSeries. Is there a way to change a bubble's color after it has been added to a bubbleSeries?

Thank you a lot,

Yes you can do this by using the FillEffects collection on the bubble series :

e.g. :    ( ( FillEffect )bubble.Appearance.FillEffects[ 1 ] ).SetSolidColor( Color.DeepSkyBlue );

Note that this collection is filled only if you provide a FillEffect when adding a new DataPoint.

e.g. :   bubble.AddBubble( 5, 1, 5.0f, "some label", new FillEffect( Color.Beige ) );

If you do not, it will be empty, so that you will need to add FillEffect to the collection if you want to change the color of a bubble.

e.g. :    bubble.Appearance.FillEffects.Add( new FillEffect( Color.DeepSkyBlue ) );

You will need to do this for all the DataPoints.