After graduating, she assisted the set-designer Günther Schneider-Siemssen between 1986–1989 and built sets commissioned by European operas,[1] advertisements and music videos.
Coeln's natural chromotopes are built on the basis of sunlight illuminating her filters, while the artificial require projectors.
They are used as the setting for her portrait series, choreography and performances and are often accompanied by correlative music, creating public spaces that encourage social interaction.
Peter Roehlen: "FARB LICHT SPIEL: Dichroic Glass in Fine Arts and Archictecture“, Prinz Optics, Berlin, 2013, p. 14–19.
(in German) Peter Weibel & Gregor Jansen: "Lichtkunst aus Kunstlicht – Licht als Medium der Kunst im 20. und 21.