A new building adjacent to Bilbao's Guggenheim Museum becomes a metallic rainbow as light softly plays across its facade. I waited for these two people and their dog to reach that spot before shooting. They give the picture its sense of scale. I also cropped the building to fill my frame with soft, pastel color. This creates an incongruity – the image is now a sea of color without limits. Yet the meaning of this picture to me rests in the softness of the color and the implications of its pattern. The silvered reflectors covering the wall of this building process the flow of light and color to create that meaning. The angle of the sun, or the passage of a cloud, can and does change everything. I was shooting on an overcast day, which made the colors as muted and soft, as the diffused light itself. The wall seems to shimmer in its flow of steps, rising from the people towards the sky. These people will soon be gone. And so will this particular pattern of color and light. The artist who created this concept seems to be expressing transience to me. Nothing is permanent. Soft colors are more likely to vanish than strong ones. A pattern that rises seems to be on the verge of disappearance. That is what I wanted my picture to say. Without these soft colors, that idea would never play. How do you feel about this image, my reasoning, and my execution? Let me know with your comments, questions and suggestions. I will respond, and we can use this image as a basis for a discussion on the meaning of color in photography. Thanks for your help.