Example image could be clearer

The last example, under the heading Changing the Bend of a Cardinal Spline, shows how changing the tension parameter adjusts the curve. However, each tension parameter is displayed on a single image and in a single color - and so it is very difficult to see
1. how the parameters affect the shape
2. which shape belongs to which parameter

At a minimum please change the image to use a different color for each spline. Perhaps change the color of each label to match the line color it belongs to as well?

Thank you.

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* ID: a0d031d9-c5f1-cf5e-9b33-2259d8c7cc81
* Version Independent ID: c2b984bd-0baf-88cf-83fd-2f3000be8942
* Content: [How to: Draw Cardinal Splines - Windows Forms .NET Framework](https://learn.microsoft.com/en-us/dotnet/desktop/winforms/advanced/how-to-draw-cardinal-splines?view=netframeworkdesktop-4.8)
* Content Source: [dotnet-desktop-guide/framework/winforms/advanced/how-to-draw-cardinal-splines.md](https://github.com/dotnet/docs-desktop/blob/main/dotnet-desktop-guide/framework/winforms/advanced/how-to-draw-cardinal-splines.md)
* Product: **dotnet-framework**
* Technology: **dotnet-winforms**
* GitHub Login: @adegeo
* Microsoft Alias: **adegeo**