Emily enjoys experimenting with color changing lizards she places a green lizard on a brown background and a brown lizard on a green background Emily knows the green lizard should turn brown and the brown lizard should turn green neither lizard changes color

The color of the background is not dependent or completely dependent on the color of the background.

Explanation:

The change in color could also be dependent on if whether they feel threatened or not or even something like temperature. More testing would be needed to definitively conclude the factors that effect the lizards change in color.