Kvantum Quick-Start Guide
For more extensive instructions or to compile from source see here.
Quickly Installing Kvantum
If you are using Manjaro:
pamac install kvantum-manjaro
If you are using an Arch-based distribution:
sudo pacman -S kvantum-qt5
If you are using an Ubuntu-based distribution:
sudo add-apt-repository ppa:papirus/papirus sudo apt update sudo apt install qt5-style-kvantum qt5-style-kvantum-themes
If you are using openSUSE Tumbleweed:
sudo zypper ar obs://home:trmdi trmdi sudo zypper in -r trmdi kvantum
If you are using a Red Hat-based distribution:
sudo dnf install kvantum
The above is paraphrased from Kvantum's installation instructions found here.
Installing the Kvantum Theme
After installing Kvantum Manager, download and extract "maliceandspitekv.zip" from this page
After extracting the .zip you should have 2 new folders for the 2 themes inside
Open the Kvantum Manager and choose "Select a Kvantum theme folder"
From here, navigate to the folder of the theme you want to install and select it (e.g. ~/Downloads/SpectrumMalice)
Select "Install this theme" and the theme will be added to Kvantum Manager
Reuse the above 3 steps if you would like to install both themes
Switching Kvantum to use the Theme
In the Kvantum Manager, select "Change/Delete Theme"
You can search "spectrum" or scroll in the drop-down menu to find your desired theme
After choosing your theme, press "Use this theme"
Switching Plasma to use Kvantum
Finally, open the System Settings application
Select "Application Style"
Choose and apply the "kvantum" style
Reloading applications will apply the new theme if they have not already. Logging out and back in can solve
Note that Kvantum may not be able to theme all parts of applications, so if you see inconsistencies, it may not be your fault.
Malice is color-compatible with other dark Spectrum color schemes. Spite is better off using only white color schemes with changes to Selection color.