All photos have been made with a Canon Power Shot G2 digital camera. The colors on the photos are as obtained with the camera and have not been post-processed. The colors and contrasts on the photos are equal or less pronounced than those observed with a naked eye. In particular, photographing the magenta light often resulted in obtaining a white color on the photo. The problem can be solved by reducing the light level (short exposure time, small aperture value), resulting, of course, in a darker background (compare photos in Fig. 2)