Libra 2 Dark Mode reading issues

[slantybard]

Interesting issue on my L2 - dark mode is not fully working for some of my books and I wanted to see if anyone else has had this issue.

My L2 is running patched 4.30.18838 using calibre 5.43 (with updated plugins). I have more than 3K books loaded via calibre on the L2.

On quite a few books, dark mode is not working correctly where the book cover is shown properly with dark background and normal image but the title page and following text pages are blank white background!

Not sure if anyone has had this happen to them, but I thought I would ask since there are so many possible factors that I am trying to isolate including:

1. Calibre conversion issue on device transfer

2. Calibre epub file issue
I have run these files through calibre from the original source files (various DRM free source types) followed up with epub error checking and some of the epubs show up properly and others don't.

3. kobo-extra.css file issue
My kobo-extra.css file is pretty sparse:

body {
	orphans: 1;
	widows: 1;
	}

body, p, .calibre, .calibre1, .calibre2, .calibre3, .calibre4, body.book, body.epub, div, blockquote {line-height: 1.2}

@page {margin-top: 3pt; margin-bottom: 0; margin-left: 0; margin-right:0;}

4. 4.30.18838 firmware issue

5. patched firmware issue

overrides:
src/nickel.yaml:
Reduce top/bottom page spacer: yes
Reduce new header/footer height: yes
src/libadobe.so.yaml:
src/libnickel.so.1.0.0.yaml:
Custom font sizes: yes
Custom kepub default margins: yes
Custom navigation menu page number text: yes
Don't uppercase header/footer text and change page number text: yes
Enable advanced settings for all fonts: yes
src/librmsdk.so.1.0.0.yaml:

[slantybard]

I can attach 2 fanfiction ebooks that show the dark mode working and not working but I am unsure about whether it violates the rules to upload them here for troubleshooting purposes. Both books are DRM free fanfiction books from fanfiction.net.

[Quoth]

Use the scramble plug in.
Note copyright is copyright even if there is no DRM or it was a free download at the time. Fanfiction is NOT Public Domain. Only PD can be shared.

[PeterT]

Why not just share the story URL

Sent from my Pixel 4a using Tapatalk

[jackie_w]

Originally Posted by slantybard

On quite a few books, dark mode is not working correctly where the book cover is shown properly with dark background and normal image but the title page and following text pages are blank white background!

If the Title Page is displayed as black text on white background in Dark Mode, the simplest explanation would be that this page consists of a single black-and-white image and no actual text, similar to a cover page. This is fairly common, I have many such books.

If other pages don't appear "dark moded" and they are not images then check your CSS for hard-coded colour e.g.

background-color: white;
background-color: #fff;
color: black;
color: #000

and remove them all.

[slantybard]

Originally Posted by jackie_w

If the Title Page is displayed as black text on white background in Dark Mode, the simplest explanation would be that this page consists of a single black-and-white image and no actual text, similar to a cover page. This is fairly common, I have many such books.

If other pages don't appear "dark moded" and they are not images then check your CSS for hard-coded colour e.g.

background-color: white;
background-color: #fff;
color: black;
color: #000

and remove them all.

Thanks for suggesting this - comparing books that work and don't work, I think the "background-color: #fff" css is the culprit!

[davidfor]

There have been a few discussions on this sort of problem. As well as the issue if the colours were set, images with transparent backgrounds will let the black background through.