I'm having the same issue on the latest stable release of Debian XFCE edition (Debian 9.8 XFCE 4.12).
Checking "Use colors from theme" in the preferences fixed it but I would like to be able to have custom colors.
I'm having the same issue on the latest stable release of Debian XFCE edition (Debian 9.8 XFCE 4.12).
Checking "Use colors from theme" in the preferences fixed it but I would like to be able to have custom colors.