I use change color in accessibility to adapt okular to my eye in the night, so I wish we have some shortcut or button in the toolbar to enable/disable accessibility in okular. I tried using shortcut but the chosen shortcut worked once then stoped working for second time, and after checking the shortcut setting in okular the saved shortcut is gone.
1. Restart Okular, the shortcut should work now. Thats another bug exclusively shipped with Okular, new shortcuts are lost until a restart. 2. A toolbar button is already available as patch, but not until 20.08 (deadline would be today...). Until now, you can use the “Toggle Change Colors” push button, e. g. add it with Settings -> Configure Toolbars to the toolbar. The only problem is that it doesn’t toggle itself, only the viewport toggles.
(In reply to David Hurka from comment #1) > 1. Restart Okular, the shortcut should work now. > Thats another bug exclusively shipped with Okular, new shortcuts are lost > until a restart. > > 2. A toolbar button is already available as patch, but not until 20.08 > (deadline would be today...). Until now, you can use the “Toggle Change > Colors” push button, e. g. add it with Settings -> Configure Toolbars to the > toolbar. The only problem is that it doesn’t toggle itself, only the > viewport toggles. Thanks that was really helpful, You are right the problem with shortcut was persistent because I never close Okular I kept it always opened with all my needed pdf files, but after closing all my files and restarting the shortcut is working again. And I also added “Toggle Change Colors” push button to toolbar and it seems to work really good. You saved me a lot of time because I always keep Okular colors to White (foreground) on top of dark gray (background) to avoid hurting my eyes especially at night, but for some files that have technical drawings I need to always temporary disable the changed colors to see correctly its contents. Really big thanks to you :)