lxappearance
It's a desktop-independent theme switcher for GTK+
LXAppearance is part of LXDE project. It's a desktop-independent theme switcher for GTK+.
There is no official package available for openSUSE Leap 15.5Distributions
openSUSE Tumbleweed
openSUSE Leap 15.4
openSUSE Backports for SLE 15 SP3
SUSE SLE-15-SP1
SUSE SLE-12-SP5
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.