The two most colors that are most associated with Halloween are orange and black. These colors became associated with Halloween starting with the ancient Celts holiday Samhain. The time of the year when the amount of daylight was changing, this is why there is the color black. When we look at orange we are reminded of the harvest. The colors of Halloween date back to the Celts because they were people who lived off the land. So, their lives revolved around what the earth had to offer at different times. Orange and black are two colors of Halloween that have yet to go out of style due to their origins.