How to customize the list/treeview selection colour in custom Fluent Light theme?

[Herbert]

I customized the Fluent Light theme with a light green colour in Theme Studio. However, the list/treeview selection colour remains in blue colour. Is it possible to change the selection colour in list controls as well? I noticed that text selection in textbox control will use my custom colour. In my opinion, this is a bug. The selection highlight should match the palette colour.

Note that text selection uses the primary colour:

However, TreeView selection still uses the blue colour:

 

[Herbert]

After some digging, I found that I can change the selection colour to match my theme colour by changing

ContentBackgroundSelected.Color colour and ContentBackgroundSelected brush in Brushes.xaml. Hope this helps other in creating custom theme.