The gasoline does not have color if perhaps a little yellowish is coloring to distinguish the quality and there is no rule that says what color it has to be depends on the gas station that if it is Shell the shell serves and it has its colors to distinguish it in many countries the color is regulated in diesel (diesel) and they do it because there is a type of diesel They consume that type of fuel and the police sometimes review the deposit taking a sample and for the color they see if it is using补贴燃料,并罚款