[okular] [Bug 519845] New: The colors of the pdf are in negative

[Jaime Torres]

https://bugs.kde.org/show_bug.cgi?id=519845

            Bug ID: 519845
           Summary: The colors of the pdf are in negative
    Classification: Applications
           Product: okular
      Version First 26.04.0
       Reported In:
          Platform: openSUSE
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: jtamate at gmail.com
  Target Milestone: ---

Created attachment 192079
  --> https://bugs.kde.org/attachment.cgi?id=192079&action=edit
The observed pdf

SUMMARY
The colours of this pdf are rendered in negative, background black instead of
white, ...

STEPS TO REPRODUCE
1.  Open the "Plano de Metro con base cartográfica"
at https://www.metromadrid.es/es/viaja-en-metro/plano-de-metro-de-madrid
with the default backend: Using Poppler 26.02.0

OBSERVED RESULT
Look at the screenshot.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20260430
KDE Plasma Version: 6.6.4
KDE Frameworks Version: 6.25.0
Qt Version: 6.11.0
Kernel Version: 7.0.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 6 × AMD Phenom(tm) II X6 1100T Processor
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: AMD JUNIPER

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