Inverting colors in emacs

Question

Is there any extension or easy way to invert colors in emacs?

I tend to show code a lot through screen sharing and often a light theme is better while the dark is more comfortable for me to work alone.

M-x invert-face RET default RET – Christian Nybø Dec 08 '20 at 08:31 — Christian Nybø, Dec 08 '20 at 08:31

max0r · Accepted Answer · 2015-06-16T10:37:42.960

4

You could use two different color themes and switch between them.

(global-set-key [f5] (lambda () (interactive) (load-theme 'sanityinc-tomorrow-day t)))
(global-set-key [f6] (lambda () (interactive) (load-theme 'sanityinc-tomorrow-night t)))

edited Jun 16 '15 at 10:37

answered Jun 16 '15 at 09:14

max0r

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You cannot switch to themes directly using their names. An elisp call to load a theme is of the type (load-theme 'THEME-NAME t). That has to be wrapped in (lambda () (interactive) .. ) if binding directly to a key. – Kaushal Modi Jun 16 '15 at 10:24
@kaushalmodi In case of color-theme-sanityinc-tomorrow-... this works. But I've changed my answer as you suggested. – max0r Jun 16 '15 at 10:36
Ah. That theme then might have those wrapper functions built in. Generally theme packages do not have such wrapper functions. – Kaushal Modi Jun 16 '15 at 10:39
You could also just use M-x enable-theme – Jordon Biondo Jun 16 '15 at 14:04

score 2 · Answer 2 · answered Jun 16 '15 at 09:27

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There's a -rv switch you can use to boot up Emacs in reverse video mode, however I've found it not to work in combination with custom themes.

answered Jun 16 '15 at 09:27

wasamasa

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score 2 · Answer 3 · answered Jun 16 '15 at 14:50

Your question asks about "inverting colors", which I interpret as "complementing colors". But then you also talk about themes.

You can use library Palette (palette.el) to obtain the complement of any color in a WYSIWYG way (so you can easily tweak the result if you like).
You can use library hexrgb.el to obtain the complement of any color programmatically (command hexrgb-complement).
You can use library Do Re Mi or library Icicles to incrementally adjust colors or face foregrounds/backgrounds.
You can use these things (above) to define a new theme starting from an existing theme.
You can use library Icicles to cycle among existing themes (color themes or custom themes).

Inverting colors in emacs

3 Answers3