cipricus
commented
3 years ago Fixed it myself. Trying to answer to another issue about color scheme I have found a detail that I had ignored: the window decoration color (that is the titlebar color) can be edited along with the color scheme.
In this case I have edited my customized Breeze Dark color scheme and changed the "Active titlebar" color by picking the screen color of the "Dark" Firefox theme.
This seems to fit rather well the Fluent-Dark kvantum theme.
I have succeeded in installing the materia-decoration theme but it doesn't really fit the Fluent Dark kvantum theme. Materia decoration doesn't look as dark as the Kvantum theme (like it seems it should be, given the pictures under https://store.kde.org/p/1280231/) , but more grey, (like it is in the picture under https://github.com/Luwx/material-decoration).
Is this dependent on a version of Plasma?
Here (1) is how the combination Fluent-Dark/Materia-decoration looks at https://store.kde.org/p/1280231/, and beside it (2) is how mine looks (and the decoration really looks like the one under https://github.com/Luwx/material-decoration: so, to me it doesn't seem this decoration is made for Kvantum-Dark as it is said etc).
Can they be made look consistent?