Color Scale for specific colors (like blue and pink, for Synthwave or Retrowave)

[ktaherig]

I've tried installing G'MIC, both from the *.zip file and using dpkg -i on the *.deb file. I've added its "gmic_gimp_qt" location path as a plugin in GIMP under "Edit">"Preferences">"Folders">"Plug-ins", tried following the instructions on youtube videos and on blog posts (the official G'MIC docs are of no help whatsoever), and I can't get it to run in GIMP. How do I get this to run?

I really appreciate your help, by the way