Hi Sharon,

I understand - you want something like a "change tracking mode". I do not
really know if you can manually set custom faces on the text of a buffer
(you probably can, but I don't know how).

If you use git for version control, I found diff-hl mode (
https://github.com/dgutov/diff-hl), which highlights the changes since the
last committed version. Maybe this helps? For example:

[image: image.png]

Best,
--Diego


On Thu, Aug 6, 2020 at 1:43 PM Sharon Kimble <boudiccas@skimble.plus.com>
wrote:

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>
> Thanks for replying Diego.
>
> The text of the book will not be exported into latex or any other
> forward-type document. I need the coloured text purely for my own
> interest and usage. When, and if, I do export it to latex, LibreOffice
> doc or whatever, it will just have the standard coloured text of black
> text on a white background. But I need different coloured texts in
> org-mode to show me graphically where I added in new text to the book,
> and at what stage of the drafting.
>
> For instance - first draft is white text, second draft is lime-green,
> third draft is light-blue, fourth draft is pale-red, etc.
>
> So in the above instance I would have white text, lime-green text,
> light-blue text, pale-red text, etc ... all in the same document.
>
> Is that clearer?
>
> Thanks
>   Sharon.
>
> Diego Zamboni <diego@zzamboni.org> writes:
>
> > Hi Sharon,
> >
> > I'm not sure I understand what is it that you are trying to do. But
> color (or any other visual) is a feature of the exporter you use rather
> than of Org-mode itself. For example, if you are exporting to HTML, you can
> use the following
> > at the top of the document:
> >
> > #+html_head_extra: <style>body { color: white; background-color: black;
> }</style>
> >
> > For LaTeX export, you should be able to add the correct settings using
> #+LATEX_HEADER_EXTRA.
> >
> > Hope this helps,
> > --Diego
> >
> > On Wed, Aug 5, 2020 at 2:37 PM Sharon Kimble <boudiccas@skimble.plus.com>
> wrote:
> >
> >     -----BEGIN PGP SIGNED MESSAGE-----
> >     Hash: SHA512
> >
> >     In a book that I am writing, the text is white on black background
> which
> >     I like. But this is only the first draft, when its ready I shall go
> onto
> >     the second draft and then third draft, as many as necessary to polish
> >     the book before it goes to the beta-readers.
> >
> >     So the first draft is white text on a black background, is it
> possible
> >     for all the second draft text to be in a different colour that I
> assign
> >     to it? And ditto third draft onwards?
> >
> >     I envisage something like setting the text with 'M-x
> second-draft-text'
> >     which will then display the new text with its assigned colour. Which
> >     will also mean that the document will have multi-coloured text in it?
> >
> >     Is this possible?
> >
> >     And if it is possible, how do I do it please?
> >
> >     Thanks
> >       Sharon.
> >     - --
> >     Debian 10.2, fluxbox 1.3.7, emacs 27.1, org 9.3.7
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> - --
> A taste of linux = http://www.sharons.org.uk
> TGmeds = http://www.tgmeds.org.uk
> DrugFacts = https://www.drugfacts.org.uk
> Debian 10.2, fluxbox 1.3.7, emacs 27.1, org 9.3.7
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