How do you see colored objects?
you see coloured objects by the light. light makes the color of the object
All substances and objects we see in color is due to the fact that they absorb all the colored radiation from the light source and reflects a particular radiation. For example, a Red colored objects absorbs all the radiation from white light and reflects only red color radiation that's why it seems red to us.
A kaleidoscope is composed of two or more mirrors laid lengthwise inside a tube, in addition to colored beads or other small objects reside in the tube's larger end. Light passes through this end, hitting the colored objects inside the rotating compartment. Any random configuration created in the falling of the colored objects reflects in the mirrors, making beautiful symmetrical patterns. Rotating the compartment moves the objects, creating a different image than previously seen.
All objects reflect the color of light that you see. Thus; lemons reflect yellow light rays, limes reflect green ones, and oranges reflect orange light rays. On a final note, white objects reflect all colored light waves, and black objects reflect none. With that said, the cones in your retina register these reflected light rays; thus, it makes sense that rooms without any light are black.