WPF SystemColors: color of TextBox border

Question

I am trying to make a search TextBox with an embedded magnifying glass icon. I have the following markup so far:

Answer 1

You might try using Microsoft.Windows.Themes.ListBoxChrome instead of the Border; that's what the default template for TextBox uses:

You should be able to use just ListBoxChrome instead of Border rather than re-templating TextBox to match the code you presented.