the model is printed in 5 colors.
To create the light blue I made the first layer blue and the second layer white.

To print 5 colors with a 4 color AMS I assigned 2 colors to one slot. When one color was finished I simply changed the colors while printing. So you can easily print 5 colors.

the filament has to be changed two times.

To make the colors stand out better, I make the background white.