kolourpaint from KDE:Applications:18.04 project

对于 openSUSE Leap 15.0，请以根用户 root 运行下面命令：

zypper addrepo https://download.opensuse.org/repositories/KDE:Applications:18.04/openSUSE_Leap_15.0/KDE:Applications:18.04.repo
zypper refresh
zypper install kolourpaint