Sky Diving

This is at the top of my list of things to try.

 photo found at:  http://www.parachuteschool.com/solo.html

Primary colors -  The three colors from which all other colors can theoretically be mixed. The primaries of pigments are traditionally presented as red, yellow, and blue, while the primaries of light are red, blue, and green.

 photo found at:  http://www.santacruz-skydiving.com/staff.html

Warm color -  A color that appears to be closer to the yellow-to-red side of the color wheel.