Blues seek harmony in relationships and are sensitive, intuitive, and creative.
Yellows are all about responsibility- they have a strong sense of right and wrong and want everybody to do their part.
Oranges are all about energy (the students who can't sit still and the class clowns), they like action and attention.
Greens are independent, like logic and facts, are curious, and innovative.
I had the students take a True Color quiz on the first day to find out which color they would be using in their monochromatic self portraits. I wasn't thinking about it at first but this does incorporate math when the students have to add up lots of numbers to get their results. I had several students that thought they tied but when I double checked the math, I think I only had about 3 of 110-ish students that really did tie. I told those students they could either pick the color that they thought seemed most like them or use both.
Just like in the 6th grade self portraits, we talked about facial proportion and shading, just with tints and shades of one color instead of all. I did let students use a tiny bit of bordering colors on the color wheel to mix in, as long as the main color appeared to be their result.
This project went over very well. Although I did have a 5th grade boy in tears and one on the verge out of frustration at one point (that was a rough day, apparently) the students all seemed to be really proud of their projects and I was happy with the results.