"Russian Longing" is a dark theme. It can cause some kind of sad, nagging feeling. It will definitely appeal to those who love the atmosphere of dreary everyday life, small towns, those same Khrushchev grayish shades. The interface is made in very close to black colors. There may be a slight shade of blue somewhere. But it doesn't beat in the eyes. It may seem that everything is too black. If so, then write. I'll make the interface less dark.