>>>Hi everybody,
>>>
>>>Why would we want this background and why not something normal?
>>>
>>>

>>>ul.precedencList li.selected {
>>>    background-color: Scrollbar;
>>>}

>>>
>>>???
>>>
>>>I'd rather have normal blue highlight for the color - how to specify it?
>>>
>>>Thanks.
>>
>>Hum - change the background color :-}
>
>Yes, I did already fix it. Just wondering why someone would use this value and what exactly does it mean?

It's a system color (think there use has been deprecated)

https://developer.mozilla.org/en-US/docs/Web/CSS/background-color