Monochromatic - containing only one color. This is my monochromatic color scheme on my sugar skull project which contains only blue shades.

Black and White - no color/the original. This is the original of the sugar skulls which only contains black and white. 

Complementary- colors directly opposite of each other in the color spectrum. 

 One thing I learned in this project is to be more creative and add your own patterns and drawings to the skull to make it seem not as boring than before. The most challenging was figuring out how to color it and saving all three of them.