She wants her paintings to glow. And for people to feel things that they have never felt before as they look at them. “I want them to be taken by surprise,” Theresa Kallrath explains. In the distance, the outlines of Stockholm’s archipelago begin to emerge: the lights on the big wheel in Gröna Lund amusement park gradually become brighter and start to sparkle in the endless blue twilight. At 11 pm it is still not dark in Fjällgatan, on the edge of the district of Södermalm. Kallrath gazes out over Stockholm and the dramatic play of light in the sky.