Fonts are harder to see when using dark mode
When the system is in dark mode, the font sample thumbnails are still using black text, making the samples hard to read. This would be especially bad if the user was using a very dark (e.g. black) theme.
I suggest adding a check that if the background is dark (e.g. system is in dark mode, or the background color is more than 50% black) the font samples should be displayed in white instead.
Thanks, MrConorAE