Chart Wizard - Color Picker dialog is displayed multiple times when modifying the Series point color

I'm using your chart wizard for users to utilize so I don't have to recreate everything you've already done. Playing around with the Chart Wizard I found you can make the color picker pop up many times before closing by going back and forth between the series and opening the color picker and closing it.

Using the attached project with these instructions to recreate behavior:

Start Program
Right click on chart and select "Edit Layout"
Click on the Data page
For "series 1" choose a point to color and then close it. You'll see it works as intended.
Go to "series 2" and choose a point to color and you'll find when you close it it will pop up another color picker.
Go back to "series 1" and choose a point to color and you'll find the color picker will pop up 2 additional times when you close it.
Go back to "series 2" and choose a point to color and it will pop up 3 additional times when you try to close it.

See the pattern?

You're creating an unnecessary stack somewhere.