COLOR ADDITION

Three overhead projectors are shining on a white surface.

Tell what color is seen when the colors listed overlap.

Red+Blue=

Blue+Green=

Magenta+Blue=

Cyan+Red=

Yellow+Red=

Yellow+Red+Blue=

COLOR SUBTRACTION

One overhead projector is aiming at a white surface. Colored plastic is placed on the projector. Tell what color is seen when the following overlap.

Yellow+Blue=

Cyan+Magenta=

Blue+Red=

Green+Cyan=

Red+Green+Blue=

Magenta+Green=

Yellow+Red=