Why does the color of light cause the color of the object to change

Because the color you see when you look at the object is

the color of the light that shined on it AND got reflected off

of it to your eye.

So in order to see a color, that color has to be in the light that

shines on it, AND it has to be a color that bounces off of the

object and doesn't get absorbed by it.

A rose looks red because it doesn't absorb red light, so when

red light shines on it, the red light bounces off of it into your eye.

The rose absorbs all other colors. If there's NO red in the light

that shines on the rose, then the rose will look black!