Steps to Reproduce:
1. in gnome-tweak-tool, enable the "Global dark theme" feature
2. start LibreOffice with the Sifr icon theme
Icons are gray on dark gray.
Icons should be white on dark gray, like other GNOME/GTK3 apps using symbolic icons.
User Profile Reset: No
User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0
*** This bug has been marked as a duplicate of bug 94632 ***