Bookmarks can't be seen on day theme color

[nutzlichsein]

Hi, when reading books using day theme, the bookmarks on top of the page can't be read. The font becomes white like the background. The bookmarks are OK using night theme.

I don't know if it's already a known issue or that I have something wrong set in my Librera. I hope I can find solution for this.

Thank you for this great app!

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Step to reproduce

1. Open a book that has bookmarks
2. set Day theme color (black text on white background)

Technical info
Librera Reader version: 8.9.182-fdroid
Android OS: LineageOS 21
Phone: Oneplus 6

Screenshots