This image consists of round stickers in a series of colours. What does the background do to enhance the image? How do the different colours of stickers and the way they are arranged bring out the image? And what does it appear to be at first glance? Also what parameters and attributes are involved?

 The picture above at first glance appears to be two girls made up of scribbles, which are not distinguishable from a distance. What is the aim of this image with the use of colour (or lack of)?

Above is a picture of the logo for the olympics. Notice how each circle has been outlined with larger circles, creating this messy looking image. This is all to do with change of parameters.