SciDAVis's GUI does not render correctly with dark colouration.

[RokeJulianLockhart]

Describe the bug: Per the title, SciDAVis does not support breeze-dark.

To Reproduce: Steps to reproduce the behaviour:

0. Install Breeze (with sudo zypper install breeze breeze-gtk breeze5-icons breeze5-style).
1. Switch to Breeze Dark (with lookandfeeltool -a org.kde.breezedark.desktop or systemsettings5/kcmshell5, then "Breeze Dark").
2. Install SciDAVis as a Flatpak package (with flatpak install net.sourceforge.scidavis).
3. Run SciDAVis (with flatpak run net.sourceforge.scidavis).

Expected behaviour: A clear and concise description of what you expected to happen.

Screenshots

Desktop: OS:

```log PS /home/rokejulianlockhart> uname -a Linux RQN6C6 6.3.1-2-default #1 SMP PREEMPT_DYNAMIC Tue May 9 07:50:57 UTC 2023 (78ee477) x86_64 x86_64 x86_64 GNU/Linux PS /home/rokejulianlockhart> ```

Browser and version:

```log PS /home/rokejulianlockhart> firefox -v Mozilla Firefox 113.0 PS /home/rokejulianlockhart> ```

Additional context

Error while fetching reviews: Error transferring https://odrs.gnome.org/1.0/reviews/api/fetch - server replied: Gateway Time-out


```log PS /home/rokejulianlockhart> sudo zypper search labplot Loading repository data... Reading installed packages... S | Name | Summary | Type --+-------------------------+-------------------------------------------------------------+----------- | labplot-kf5 | KDE Framework 5 data analysis and visualization application | srcpackage | labplot-kf5 | KDE Framework 5 data analysis and visualization application | package | labplot-kf5-debuginfo | Debug information for package labplot-kf5 | package | labplot-kf5-debugsource | Debug sources for package labplot-kf5 | package | labplot-kf5-lang | Translations for package labplot-kf5 | package PS /home/rokejulianlockhart> sudo zypper install labplot Loading repository data... Reading installed packages... 'labplot' not found in package names. Trying capabilities. Resolving package dependencies... The following 7 NEW packages are going to be installed: labplot-kf5 libcantorlibs28 libcerf2 libmatio11 libnetcdf19 liborigin3 libspectre1 7 new packages to install. Overall download size: 13.3 MiB. Already cached: 0 B. After the operation, additional 29.7 MiB will be used. Continue? [y/n/v/...? shows all options] (y): y Retrieving: libcerf2-2.2-1.2.x86_64 (Main Repository (OSS)) (1/7), 35.3 KiB Retrieving: libcerf2-2.2-1.2.x86_64.rpm ....................................................[done (9.9 KiB/s)] Retrieving: libmatio11-1.5.23-2.3.x86_64 (Main Repository (OSS)) (2/7), 131.0 KiB Retrieving: libmatio11-1.5.23-2.3.x86_64.rpm ...............................................[done (1.5 MiB/s)] Retrieving: libnetcdf19-4.9.2-1.1.x86_64 (Main Repository (OSS)) (3/7), 511.3 KiB Retrieving: libnetcdf19-4.9.2-1.1.x86_64.rpm ...............................................[done (4.0 MiB/s)] Retrieving: liborigin3-3.0.1-1.10.x86_64 (Main Repository (OSS)) (4/7), 71.2 KiB Retrieving: liborigin3-3.0.1-1.10.x86_64.rpm ...............................................[done (1.1 KiB/s)] Retrieving: libspectre1-0.2.12-1.2.x86_64 (Main Repository (OSS)) (5/7), 41.5 KiB Retrieving: libspectre1-0.2.12-1.2.x86_64.rpm ..........................................................[done] Retrieving: libcantorlibs28-23.07.70git.20230515T014626~cd32230-ku.35.1.x86_64 (KDE:Unstable:Applications) (6/7), 178.1 KiB Retrieving: libcantorlibs28-23.07.70git.20230515T014626~cd32230-ku.35.1.x86_64.rpm .......[done (127.6 KiB/s)] Retrieving: labplot-kf5-2.10.0-1.1.x86_64 (Main Repository (OSS)) (7/7), 12.4 MiB Retrieving: labplot-kf5-2.10.0-1.1.x86_64.rpm ..............................................[done (6.7 MiB/s)] Checking for file conflicts: ...........................................................................[done] (1/7) Installing: libcerf2-2.2-1.2.x86_64 ..............................................................[done] (2/7) Installing: libmatio11-1.5.23-2.3.x86_64 .........................................................[done] (3/7) Installing: libnetcdf19-4.9.2-1.1.x86_64 .........................................................[done] (4/7) Installing: liborigin3-3.0.1-1.10.x86_64 .........................................................[done] (5/7) Installing: libspectre1-0.2.12-1.2.x86_64 ........................................................[done] (6/7) Installing: libcantorlibs28-23.07.70git.20230515T014626~cd32230-ku.35.1.x86_64 ...................[done] (7/7) Installing: labplot-kf5-2.10.0-1.1.x86_64 ........................................................[done] PS /home/rokejulianlockhart> ```

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<! Please file bug reports at: https://sourceforge.net/p/scidavis/scidavis-bugs/> 

https://sourceforge.net/p/scidavis/scidavis-bugs/%3E

[highperformancecoder]

Obviously, the > is not part of the URL.

[highperformancecoder]

This looks like a duplicate of https://sourceforge.net/p/scidavis/scidavis-bugs/443/

[RokeJulianLockhart]

@highperformancecoder,

Obviously, the > is not part of the URL.

I just right-clicked. Best to leave a space between punctuation and hyperlinks, usually, since not everything parses them perfectly.

This looks like a duplicate of sourceforge.net/p/scidavis/scidavis-bugs/443

It does. https://sourceforge.net/p/scidavis/scidavis-bugs/443/#c007