Change color of spell check underline

[SamC]

How can I change the color of the squiggle underline of misspelled words. The red color is hard to see on my dark background. Setting the “Spelling Mistakes” color in Appearance has no effect.

[PKG]

Tools → Options → LibreOffice → Appearance

_{Version: 25.2.5.2 (x86) / LibreOffice Community
Build ID: 03d19516eb2e1dd5d4ccd751a0d6f35f35e08022
CPU threads: 8; OS: Windows 11 X86_64 (10.0 build 26100); UI render: Skia/Vulkan; VCL: win
Locale: en-CA (de_DE); UI: en-US
Calc: threaded}