For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:snwh:paper/openSUSE_Tumbleweed/home:snwh:paper.repo
zypper refresh
zypper install paper-icon-theme
For openSUSE Leap 42.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:snwh:paper/openSUSE_Leap_42.2/home:snwh:paper.repo
zypper refresh
zypper install paper-icon-theme
For openSUSE Leap 42.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:snwh:paper/openSUSE_Leap_42.1/home:snwh:paper.repo
zypper refresh
zypper install paper-icon-theme
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:snwh:paper/openSUSE_13.2/home:snwh:paper.repo
zypper refresh
zypper install paper-icon-theme
For openSUSE 13.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:snwh:paper/openSUSE_13.1/home:snwh:paper.repo
zypper refresh
zypper install paper-icon-theme