Bug 166439 - Slider and Scrollbar background colors are indistinguishable, with a rare exception.
Summary: Slider and Scrollbar background colors are indistinguishable, with a rare exc...
Status: NEEDINFO
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: UI (show other bugs)
Version:
(earliest affected)
unspecified
Hardware: All All
: medium minor
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: UI-Theming LibreOffice-Themes
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Reported: 2025-05-02 17:57 UTC by Bruce McCoy
Modified: 2025-05-03 19:21 UTC (History)
3 users (show)

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Description Bruce McCoy 2025-05-02 17:57:13 UTC
Windows in Libre Office may display scrollbars.  Within he scrollbars are two elements  --  Background  and Slider.  The hue of the background is "Background color."  The slider has one OT two hues  --  "Mouse Up color" or "Mouse Down color."  Typically each of these three possible colors is easily distinguishable.

On one of my monitors the  Background and Mouse Up colors in Libre Office, but in no other program, are essentially identical.  I support Libre Office, although I am not a programmer.  So, dear programmer, would you consider allowing users to control the Background, Mouse Up, and Mouse Down colors in scrollbars?
Comment 1 Mateusz Wlazłowski 2025-05-02 19:10:07 UTC
Thank you for reporting the issue

Could you provide us the screenshot of the issue for us to see ?

Also, please test in safe mode in Help > Restart in Safe mode
and paste the information from Help > About libreoffice
Comment 2 Mateusz Wlazłowski 2025-05-02 19:15:11 UTC
Oh it's just on one monitor. In Tools > Options > Appearance, you can change the appearance between System, Light and Dark. Additionally, you can customize individual items

I believe that windows lets you change the default cursor

https://www.tomsguide.com/how-to/how-to-change-mouse-cursor-in-windows-10
Comment 3 Bruce McCoy 2025-05-03 00:03:04 UTC
Thank you for the prompt response.  Good job.  Yes, I could send a screenshot, but the scrollbar background and the slider are both essentially the same color.  You are correct, in Tools > Options > Appearance, you can change the appearance between System, Light and Dark.  
 
Safe mode reveals no other problems.

Here is the information I did not send earlier.  I apologize to you for that omission.
Version: 25.2.2.2 (X86_64) / LibreOffice Community
Build ID: 7370d4be9e3cf6031a51beef54ff3bda878e3fac
CPU threads: 4; OS: Windows 10 X86_64 (10.0 build 19045); UI render: Skia/Raster; VCL: win
Locale: en-US (en_US); UI: en-US
Calc: threaded

One can change the appearance between System, Light and Dark.  Although the situation is improved in the Dark System setting, as it is possible to distinguish the Background color from the Mouse Up color and the Mouse Up color from the Mouse Down color.

You are correct.  Windows allows several cursor settings.
  
Another suggestion might be to leave the Background Color unchanged, to hard code the Mouse Up color to the current Mouse Down color and to make the current Mouse Down color even more contrasting to the Background color.  This would make the change trivial.

Thank you for your most kind attention.  You are very encouraging.
Comment 4 V Stuart Foote 2025-05-03 19:21:00 UTC
A little unclear about the UI element in question, still could use a screen clip of specific issues.

And could this be something more needed for work on bug 164972, just in opposite direction to increase the base color luminance of inactive controls when using dark themes, a dupe?

https://gerrit.libreoffice.org/c/core/+/181271