How to increase contrast of scrollbar

[José Matos]

On Sat, 2023-09-02 at 22:10 +0100, Paul Stansell wrote:
> Hello,
> 
> How can I increase the contrast of the scrollbar in LyX?
> 
> In the image below the left scroll bar is from Brave and the right
> from LyX.  The LyX scroll bar is barely visible against the
> background.

LyX follows the global theme.
Which theme are you using? The default in KDE plasma is "Breeze" and
the scrollbar is visible.

-- 
José Abílio