What about WARM and COOL Colors?
COOL colors have a calming effect, Things seem to move into the background with cooler colors, like a blue sky.
WARM colors are more attention grabbing, they make the object seem closer or come forward in your artwork.

Click on the image below to make it larger so you can download and print it out.

If you’d like to know a little more about Color…

Fun Color Theory Draw Book
Color Theory for Kids and their Grown-Ups is an instant download book. It’s the same as the sketchbook-version.
And it comes with a full color binder-cover-insert, and liner page. See below for more information.
$5.99