Purpose:
Review basic color theory and vocabulary;
Notice and find a different color schemes to photograph;
To practice looking at colors in your compositions.
I was checking out at Hanny's, and I saw the row of gum above the register, I thought the cool colors looked very interesting.
I just finished smoking up lake region in second singles and remembered I had to take some photos, I thought the neon yellow of the tennis ball would look very nice.
I was in art class and saw the primary colors paints, so I photographed it.