Change Bubble color at run time

[jason]

I am trying to restyle the bubbles in a Bubble series so they look a little more 3-d.  I have accomplished this with a radial gradiant in this style here:

<Style x:Key="CustomBubbleStyle" TargetType="chart:Bubble">
           <Setter Property="Template">
               <Setter.Value>
                   <ControlTemplate TargetType="chart:Bubble">
                       <Canvas >
                       <Ellipse x:Name="PART_BubbleElement"
                             Canvas.Left="{TemplateBinding Left}"
                             Canvas.Top="{TemplateBinding Top}"
                             Width="{TemplateBinding Diameter}"
                             Height="{TemplateBinding Diameter}"
                              >
                               <Ellipse.Fill>
               <RadialGradientBrush>
                   <GradientStop Color="#FFF5F5F9"/>
                   <GradientStop Color="#FF091E8F" Offset="0.989"/>
               </RadialGradientBrush>
           </Ellipse.Fill>
                               </Ellipse>
                       </Canvas>
                   </ControlTemplate>
               </Setter.Value>
           </Setter>
       </Style>

My problem is that in every example I have seen you have to set the colors at design time.  In out scenario I have built a control that extends the RadChart.  I have a dependency property which is a list of brushes. If that is set then I use those colors.  If not then I use your default colors.  I was thinking I could catch the item when the color is set and then change it to add a gradiant so it is the same color just with the gradient added but I can't seem to figure out if that is possible.  Something like setting the fill property to Bind to something in Bubble and then using a converter to add the gradient.  Is anything like this possible or do I just need to come up with new default colors on my own and do it that way?  Sorry if this does not make sense as I was having trouble figuring out how to explain it.  Thanks.

[Sia]

Hello Jason,

Unfortunately in RadChart there is no easy way for getting the default colors in the way you need. That is why I can suggest you two possible solutions:

• new default colors as you mentioned
• or using universal gradient [black and white with transparency] which can be used on every bubble's fill. If you need help with this, please let me know.

Greetings,
Sia
the Telerik team

[jason]

I went ahead and just set a default color scheme using the colors from one of your themes.  Thanks.