Although Snowpiercer takes on the role of an oppressively gray film at first, more diverse color palettes accompany the progression of the revolution itself. Indeed, as the revolution travels towards the front of the train, the colors brighten significantly, which is obviously exemplified in the classroom car. The sunny colors of the classroom and the childish decorations clash with the dark gray of the rest of the train (Snowpiercer). With these changes, Joon-ho broadens the color palette to highlight the class discrepancy that fuels the story. When the tail rebels finally encounter the colored sections, their dark clothes stand out from the oversaturated environments, allowing the audience to appreciate how dirty they look due to the extreme color contrasts. Since the tail sectioners look so out of place with the brighter color schemes in the middle and front sections of the train, Joon-ho is specifically drawing attention to the extreme disparity between the lower class and everyone else on the hierarchical social ladder . This use of color is in fact very similar to the ability of Claude's bright yellow clothing to stand out against the gray background in the tail section; only this time the roles have been reversed, further developing how inevitable the harsh rules of the class structure are in such a socially oriented context.