The spell checker underline style is a faint red wavy line, in firefox 73.0 you can set this to a more visible double straight line with an about:config integer parameter ui.SpellCheckerUnderlineStyle set to 4, and thickness of the lines can be adjusted with another integer ui.SpellCheckerRelativeSize set to 10 thru 100. The color can be changed with a string value ui.spellcheckerunderline with the hex color number, default red is #FF0000
this does not seem to work in Waterfox current 2020.02. It would be nice if you could as the default is rather hard to see on a high resoultion monitor.
That's because Waterfox Current is currently still based on Firefox ESR editions, hopefully this will change now with the help of the additional System1 developers.
Describe the bug
https://www.reddit.com/user/kronckew/draft/83760df2-51b4-11ea-92df-82a2e0f9340d
The spell checker underline style is a faint red wavy line, in firefox 73.0 you can set this to a more visible double straight line with an about:config integer parameter ui.SpellCheckerUnderlineStyle set to 4, and thickness of the lines can be adjusted with another integer ui.SpellCheckerRelativeSize set to 10 thru 100. The color can be changed with a string value ui.spellcheckerunderline with the hex color number, default red is #FF0000
this does not seem to work in Waterfox current 2020.02. It would be nice if you could as the default is rather hard to see on a high resoultion monitor.