Selecting the dark them makes the query plan images above render with a black background, which makes the diagram illegible.
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@rajeevac Thanks for the feedback! I have assigned the issue to the content author to evaluate and update as appropriate.
Fixed
@rajeevac We will now proceed to close this thread. If there are further questions regarding this matter, please reopen it and we will gladly continue the discussion.
Thanks a ton for taking a look at this!
However, I am not sure quite sure that it still makes it easier to read the images.

THat's the image with the light theme
and here is the dark theme version:

As you may see, the dark theme doesn't reder the text sharply and it still makes it very hard to read the image contents.
Thanks!
Rajeev
@rajeevac I understand and I still have it in my backlog to reshoot the images at some point.
Thanks!! Is there a way we can keep the issue active until then?
you can request to re-open or create new issue - I am investigating this issue