Kept it simple for this challenge. Decided to make different animal rpg guys based on the colors. Its a Blood Mage Turkey Vulture, Assasain Praying Mantis, and Healer Blue Sea Star. Each animal is their color in real life as well.

The red and green were fine to work with but the Blue spectrum has very very little contrast, it made it difficult to distinguish different parts. I originally planned to do a jellyfish for blue, but the blue was way too dark to make it work. 
 

I also ended up sort of challenging myself to keeping each one to a 32x32 sprite. I like working small. 

7 red shades, 7 green shades, and 6 blue shades were used.