Rever consists of an outdoor object and an indoor installation. The object is a negative flag (the local national flag in negative colors) placed outdoor. A videocamera is pointed through the window upon the object in a large frame composition which shows the flag together with a part of the environment. As the camera is set up to invert the colours of the video feed, inside the space a live negative image can be seen, with the (straight) image of the local national flag in the middle. The installation is part of a series in which colour inverted national flags are installed all over the world. 9 projects have been completed and exhibited in Germany, Hungary, Italy, Finland, Moldavia, Romania, Slovakia, USA and The Netherlands between 2000-06 .