I'm running Inkscape on Debian 11 (Bullseye), the latest stable release of Debian, and using the XFCE desktop environment. Inkscape is working OK, except it doesn't obey my GTK theme settings. I'm using a dark theme, but Inkscape ignores it, instead using the GTK toolkit's default theme, Adwaita, and it's bright and hard on my eyes. I tried uninstalling and reinstalling it, and also tried a different dark theme with it, and none of those things gave me my preferred dark look in Inkscape. 😕 I'm also attaching a screenshot so that y'all can see what I'm talking about. I've got the Thunar file manager in the background, which obeys the dark theme setting, while Inkscape doesn't, and it's very annoying.
Beyond the Basics (Linux) Inkscape not obeying GTK theme settings
Inkscape.org
I'm running Inkscape on Debian 11 (Bullseye), the latest stable release of Debian, and using the XFCE desktop environment. Inkscape is working OK, except it doesn't obey my GTK theme settings. I'm using a dark theme, but Inkscape ignores it, instead using the GTK toolkit's default theme, Adwaita, and it's bright and hard on my eyes. I tried uninstalling and reinstalling it, and also tried a different dark theme with it, and none of those things gave me my preferred dark look in Inkscape. 😕 I'm also attaching a screenshot so that y'all can see what I'm talking about. I've got the Thunar file manager in the background, which obeys the dark theme setting, while Inkscape doesn't, and it's very annoying.
There are some issues with dark themes under Linux: https://gitlab.com/inkscape/inkscape/-/issues?scope=all&state=opened&label_name[]=OS%3A%3ALinux&search=dark
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Inkscape brings some themes, if one of them is turned on the theme of the system is ignored. Preferences: Interface: Themeing. ;-)