Black and White version.
my black and white version Is very simple but has a lot of complex shapes at the same time.  
monochromatic

monochromatic is when the colors are similar but have slightly different shades and they are next to the color scheme. 
complementary. 
complementary colors are the opposite from each other on the color          scheme.
 custom.
this is my custom version. it has a bunch of opposite colors and doesn't really look the good. the monochromatic and complementary look a lot better. 
sugar skull
Published:

sugar skull

Published: