lighten background color on button click per binding with converter

Question

I want to lighten a buttons background on click. So I did the following:

Answer 1

You shouldn't be using System.Drawing.Color on WPF. Use System.Windows.Media.Color instead. Another important thing is that the Setters inside the ControlTemplate.Triggers do not have to reference the control by using RelativeSource TemplatedParent. Just:

And keep the rest the same. Now, if you need to specify custom logic (such as a converter, just place the converter in that setter.

Edit: The infinite loop comes from the fact that you're Binding to Background.Color, and then Setting Background, which triggers a Property Change notification into the WPF Property System, which in turn causes the Binding to be refreshed, and so on... I think you might be able to work around this by setting the binding Mode to = OneTime