Hello. I use Kdenlive on Debian 10 and don't change the theme. I've run the $ sudo apt-get instal kde-runtime command, but still only the default theme. The version of kdenlive is 18.12.3.

santtos wrote:don't change the theme.

do you mean colour theme?

bartoloni wrote:

santtos wrote:don't change the theme.

do you mean colour theme?

Yes, In Ubuntu I could change with this command, in Debian not.

on 18.12.03 you can use the default menu to select color theme SETTINGS --> COLOUR THEME--> THEME
1-2 weeks before release 19.08 all the extra themes was removed from KDE sources, (this also affect Kdenlive) ... this mean that user can use only 5 color themes (4 with contrast/light/dark mode and 1 with a "special" dark theme created for Windows users)
Extra color themes can be downloaded from: https://store.kde.org/browse/cat/112/order/latest/
the installation folder for themes is: bin/data/color-schemes (manually installation)

i dont' know other way to install color themes.

P.S. you can also create (and maybe distribuite) your own color scheme (just changing values on .colors files)