His experiments with "écriture auto-matique", expressive handwriting and unmistakable painting style brought Fritz Winter closer to informal painting. Werner Hofmann writes about Winter's series of works on paper from 1960: "Fritz Winter surprised us quite unexpectedly with a new and almost cyclical work: - a long series of small, precious, very condensed sheets on paper from the writing pad, painted with a light, often playing, sometimes hesitant brush. In terms of content, they are improvisations and meditations, which transform a visual experience of the light, color and form games of the great nature outside the windows of the country house in Dießen into an abstract counter-image or help an inner movement on the keyboard of color-form sequences to pictorial expression."
Winter's untitled gouaches are infused with an enormous lightness. Various dense forms seem to float weightlessly over the entire picture surface. The light emanating from the background of the picture envelops the structure of forms in an enchanting poetry.