Layers

 http://ctenhoff.files.wordpress.com/2012/03/216814xcitefun-diffrent-color-lights-rgb-on-art-paintin.jpg

 http://blog.lib.umn.edu/sinkx004/myblog/Mark_Zuckerberg_Photo_Collage_1920.jpg

 https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgR1BXCv6OdZyaCA6d4tbKT7pcI1RttYAfYhI7eLLXuwC17xqMCKF5OQBpnQQ3hq3C7WzqjtkejxTmjJJG8ocHZ8CqWB4xGkEhurSVGDpwBBAuSTMbhAm0yWDEaLtcy4US3BD5DllecULhv/s1600/Mission+Scooter+25x48.jpg

 http://mystery756.files.wordpress.com/2012/10/abstact-painting-layers-flow-1.jpg?w=630

 http://cdnimg.visualizeus.com/thumbs/fd/97/graffiti,graphic,design,layers,pop,art,art,grafitti-fd971dafbb976c2a19da917d3c20ce44_h.jpg

http://fineartamerica.com/images-medium/layers-lxxvii-diana-durr.jpg