I would assume it would be because of iridescence of the object. Some things, such as crow feathers, can appear to be bluish or greenish, either because of light or the physical properties of the object.
An object that appears black is absorbing all colors therefore none of the colors in the spectrum are being reflected.
White light contains all the colors mixed together. A colored object has a pigment on its surface that ABSORBS all these colors except one. This one color is reflected back off the object. Thus, as we see the object by this reflected light coming from the object into our eyes, the object appears to be colored.
Reflected
all the colors are reflected
white
An object that appears black is absorbing all colors therefore none of the colors in the spectrum are being reflected.
White light contains all the colors mixed together. A colored object has a pigment on its surface that ABSORBS all these colors except one. This one color is reflected back off the object. Thus, as we see the object by this reflected light coming from the object into our eyes, the object appears to be colored.
The object appears black when no colors are reflected. (In actuality, some light is reflected by all objects, making black simply a very dark gray.)
Reflected
all the colors are reflected
white
When light is absorbed by an object, it absorbs all colors besides black, which is able to be reflected showing off black. same with other colors --Kal-El
A white object reflects all the colors making up white light. Therefore the reflected color will still be white.
When an object appears yellow, that means that most of the light bouncing off it is yellow light. If there is light of other colors hitting it, it's absorbing everything else except the yellow.
angle at which visible light is reflected off the object.
the wavelength of the reflected light :)
Red: absorbedOrange: absorbedYellow: absorbedGreen: absorbedBlue: absorbedIndigo: absorbedViolet: reflected