Web: Change color of the selected row in a WebListbox?

I have a WebListbox, styled in black & white with the WebStyles.

But when the user select a line in the WebListbox, the line is getting blue.
I don’t find the entry, where this blue - color is coming from. [testing on macOS 10.12 with Xojo 2017r1.1]

Where can I change the blue color to black?

[I want white background and black text for the listbox, that works; and the selected line should be black background and white text.]

forget it. it was my fault.

for those who found this with a search, the solution:

I missed to select the style in the “SelectionStyle” of the Listbox. I only used the “Style” option.