I found this from a member

You can change the color of the scroll bar in FF using the code below. Just copy and paste it to a notepad and save as userContent.css in a Chrome folder in Firefox profile. If you don't have a Chrome folder just create one. The profile folder is in C:\Users\User name\AppData\Roaming\Mozilla\Firefox\Profiles\WhateverNumber.default. You can change the colors as you like and the thickness by specifying thin or auto or none if you don't want a scrollbar.

:root{
scrollbar-color: #BA4A00 #000000; ( this is example )
scrollbar-width: auto;
}





:root{
scrollbar-color: #87ceeb #ff5621; (this what i did )
scrollbar-width: auto;
}



It does not do anything...vertical scrollbar remains grey.



Have i done something wrong as i followed the instructions exactly.There used to be Noia Scrollbars add on which does not work.


Thank you


I have latest version of Firefox 75.0 -Windows 10 Pro with latest updates

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Whoops !... I spelled Vertical wrong...not vertcal..silly me