When might an object of a certain colour be perceived as a different colour

A)  if the colour is changed using cell phone technology 
B)  if the foreground changes, creating a variation in hue 
C)  if the background changes, creating a variation in contrast 
D)  if the background changes, creating a variation in brightness

Variation in Contrast

Differences in the degree of distinction between two or more elements, often used in visual and language analysis.

Variation in Brightness

Differences in the lightness or luminance perceived in visual stimuli, which can affect contrast and visibility.

Variation in Hue

Differences in color perception, which can be attributed to changes in wavelength, saturation, and lightness.