Most likely black.
When red, green, and blue are combined, the color produced is white.
When red, green, and blue light are combined, the color created is white.
I believe the colors are red, green, and blue.
When red, blue, and green light are combined, the color produced is white light.
When red, blue and green light is combined, it creates white light (theoretically).
To create yellow, mix equal parts of red and green together. The primary colors red, blue, and yellow are combined in different ways to produce various hues.
When red, green, and blue colors are combined at full intensity, they produce white light. This combination is known as additive color mixing, where all three primary colors are added together to create white.
Brown is the color made when green and red combined.
I believe the colors are red, green, and blue.
blue and red = magneta also, green + red = yellow green + blue = cyan green + red + blue = white
When you mix red, blue, and green light together, you get white light. This is because red, blue, and green are the primary colors of light, and when they are combined at full intensity, they create white light.
Unfortunately there is NO working cheat for it as of yet. All the listed cheats for that costume have proven to be utterly false. So, as of yet, the only way to actually get it is to complete all 180 Challenges.