> I would say that changing the default :background to transparent is
> justified, but such a change would only go on main branch, just to be
> immediately canceled by the new preview system. So, I'd rather wait
> until we merge the preview branch.
>
> Also, Karthink, may you please point me to the code on your branch that
> is dealing with :background default?

https://code.tecosaur.net/tec/org-mode/src/branch/dev/lisp/org-latex-preview.el#L59
https://code.tecosaur.net/tec/org-mode/src/branch/dev/lisp/org-latex-preview.el#L3211

org-latex-preview-appearance-options is the replacement for
org-format-latex-options.

> It looks like on main dvisvgm is putting rectangle with no color
> specification when we request black background - it is something Emacs
> does display differently from other svg viewers. Will things on your
> branch be different?

I tested setting the :background to Black and other colors in the
preview branch -- dvisvgm works as expected in all cases.  I'm not sure
why it works differently on main.

Karthik

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