They are pan-african colors.
http://en.wikipedia.org/wiki/Pan-African_colours
Bright colors such as red, yellow, and white tend to stand out on a black background. These colors create a strong contrast and are easily visible against the dark background.
Colors that show up on black are typically bright or light colors, such as white, yellow, red, or neon colors. These colors stand out against the dark background of black.
Green-Land Red-Blood that was shed Black-Color of the people Yellow-Sun
Examples: red = green blue = orange yellow = purple They are also colours that stand out. e.g
they are the colours of the Olympic rings and the stand for determination, equality and five others that represent the true meaning of the Olympics
The four colors on the Iraq flag are Red, White, Black ,and Green.
White or neon colors tend to stand out and glow brightly under black light. Fluorescent colors such as neon pink, orange, green, and yellow are particularly effective for creating a glowing effect. Avoid wearing dark colors like black or navy blue as they will not react to the black light.
brown black orange and yellow.
The colors of the rainbow... Red Orange Yellow Green Blue Indigo Violet
Examples: red = green blue = orange yellow = purple They are also colours that stand out. e.g
Bright and bold colors like red, yellow, or neon shades can be paired with black to make it stand out and pop.
It Depends What Your Referring To ... If Your Talking About The Song , Then It Means 3 Things ... 1. The Colors For The Pittsburgh Steelers 2. He's Black And His Grills Are Yellow 3. His Car Is Black And Yellow But If Your Talking About Something Else , It Would Refer To Regular Colors.