That's because, even though those colors exist, you've probably never seen them. Red-green and yellow-blue are the so-called "forbidden colors." Composed of pairs of hues whose light frequencies ...

Almost all TV remote controls have red, green, yellow, and blue buttons. However, most people are unaware of what these four colored buttons do. You've probably noticed that almost every remote, ...

The various buildings and unlocks for Kingdom Builder mode depend on your getting a specific amount of blue, yellow, red, green, and purple Toads before you can buy them. However, you'll have to ...

green and blue. Add red and green together, you get yellow. Add green and blue together, you get cyan. Added blue and red together, you get magenta. Add different amounts, and you get different ...