[okular] [Bug 437755] New: (Feature Request) Changing colors configuration and Dark icons

[Victor]

https://bugs.kde.org/show_bug.cgi?id=437755

            Bug ID: 437755
           Summary: (Feature Request) Changing colors configuration and
                    Dark icons
           Product: okular
           Version: 1.9.3
          Platform: Mint (Ubuntu based)
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: New backend wishes
          Assignee: okular-devel at kde.org
          Reporter: murilo.sc.sc at gmail.com
  Target Milestone: ---

Using Okular was a game changer for me, as I have the possibility  to use the
interface of Okular in dark themed mode (thanks also to using Linux, one of the
reasons I dumped Windows) and also the possibility of easily changing document
colors. This makes a whole lot difference for someone who stays all day, 10+
hours, in front of a screen reading PDFs. At night, I don't have headaches
anymore.

I started doing this by inverting colors, I don't know the reason, but it was
not entirely confortable, so I tried changing dark and light colors of the
PDFs. I change Light colors to Dark Grey, and dark colors from the pdf as very
light yellow and haven't ever tried something else. This eliminates any
eyestrain.

But I have one problem: I'm currently doing a PhD in a STEM related field, and
sometimes it is necessary to see colors in figures. The solution available
right now is to use a hotkey or a button on tool's bar that disables color
changes to default (white background and black print). It would be
significantly better if one could, by a button on tool's bar, to swap from
changing dark and light colors to invert colors, avoiding a big contrast of
dark and bright colors available right now.

This could be more easily implemented by adding a hierarchy to colors, setting
it up on Configurations the first color option, then a secundary color option,
so that when the "change colors" button on tool's bar it changes to the
secondary color option. 

Also, It would be more aesthetically pleasing if dark icon had better colors
(they are barely visible right now) when in the OS's dark mode (panel on dark
colors).

Thanks in advance.
Victor.



EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

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