See the attached screenshots for how it looks when used on a desktop with dark theme. These two panels are the only occurrence, everything else is fine.
Colors are looking fine with Breeze-Dark (dark theme) and Adwaita (light theme), the effect of highlighting the relevant options is working well and everything stays readable with good contrast. This ticket can be closed.
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The colour white is clNone. I will change clWindow then is will be gray. The idea is the highlight the active menu options.
The bug is fixed in 0.9.426.
Colors are looking fine with Breeze-Dark (dark theme) and Adwaita (light theme), the effect of highlighting the relevant options is working well and everything stays readable with good contrast. This ticket can be closed.