Method of adjusting a desired white color on at least a part of an image by means of a device comprising at least a light source (2) and at least an electro-optical light modulation panel (3, 4, 5). The light coming from the light source is converted into an image via at least the electro-optical light modulation panel. A light control device (12) co-operating with a light modulation panel is associated with this panel. For adjusting the desired white color, the electro-optical light modulation panel is driven through at least a part to a desired maximum voltage. The part is imaged on the part of the image. The color of the part of the image is adapted to the desired white color by means of the light control device.