gtkqtthemesxfcexubuntu
I use Xfce.
My problem is – some programs look nice and some sort of ugly. AFAIK this is because Xfce is GTK and most programs use GTK theme, but some programs use Qt and thus don't use GTK themes.
So – my question is – How can I apply some theme to these Qt programs? Can I download some qt theme and drop into ~/.themes? would that work? Qt programs don't have to look absolutely the same as GTK ones – I don't care about that. But I want them at least not to look so ugly.:)
Start Firefox with one of the following command:
env GTK_THEME=Adwaita:light firefoxenv GTK2_RC_FILES=/usr/share/themes/Simple/gtk-2.0/gtkrc firefoxThis will launch Firefox using the Simple/Adwaita:light theme, which is pretty basic and should blend with your Persona. You can try other themes, by replacing Simple with the theme name, but this doesn't work with all themes.
So far I have successfully tested with Simple and Redmond themes...
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After
It appears that you want to change the theme of your window manager. For that, you do not have to install any extra software.
Click on the mouse icon (or the menu icon) usually located at the left end of your panel). In the window that opens, click on Settings in the right pane and then scroll down to window manager in the left pane.
You'll get a new window titled Window Manager. Click on the Style tab. The "software heading" will change depending on the theme you choose in the left pane. You can make other changes there as well. In the next image, I've chosen Numix.
And this is what the Greybird theme looks like (and it resembles the image you posted):
Best Answer
This is not exactly an answer to your question but if you want a nice, consistent and unified look for both Qt and GTK programs I recommend the QtCurve style. Modern distributions should provide a package, in Ubuntu it's
apt-get install qtcurve.And yes,
qtconfigis the program to use for configuring Qt-related stuff. In Ubuntu 16.04 you can install it viaapt install qt4-qtconfig.