I've made some small tweaks to make the Catppuccin themes more in line with the Catppuccin organization's Style Guide. The diff colours now make more sense, with red for a removed line and green for an added line. As well as blue for changed lines. And the comments are a slightly different colour.
One more thing though: when I made the original merge request to add the catppuccin themes, I made it to the master branch, which I now understand to be for KF6. Was/is there any merit to have these on the KF5 branch, since I did not know about the difference when I made my contribution. Or is it perhaps too late now?