It might have somthing to do with them being the main colours. You know how yellow and BLUE make green..... and RED and blue makes purple. Also ir might be somthing to do with the America Flag. But my best answer would be the main colour one. Hope that helps
The colours of a rainbow are red, orange, yellow, green, blue, indigo and violet.
The coolers of the French flag typically refer to the three vertical bands of color: blue, white, and red. The blue is positioned on the hoist side, followed by white in the center, and red on the fly side. These colors symbolize liberty, equality, and fraternity, which are the core principles of the French Republic. The design has become an iconic representation of France and its national identity.
The Red Viking Helmet and If you click in the same spot where the Red Viking Helmet is there should Always be a Blue Viking Helmet, And if there is always a Blue one there is a red one
The main color for the spider man suit is red and blue.
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.
no they can be yellow, red, purple or rainbow colored
No, the blood is always red. The term,' blue blood' is given to noble people.
oxygen rich blood is red, while oxygen poor blood is blue. this is the reason that blood in your arteries are always red, and blood in your veins are always blue.
It's always been blue and red (overalls and undershirt), but in some games a "blue" ghostly Mario comes out and the Red Mario (YOU), the hero and good guy has to defeat the blue one, mostly in races.
Aaron Blue, Red, Yellow, Yellow, Yellow, Yellow, Yellow, Green. Air Instruments Red, Red, Blue, Yellow, Green, Green, Green, Yellow. Always Slide Green, Green, Red, Red, Yellow, Red, Yellow, Blue. AT&T Ballpark Yellow, Green, Red, Red, Green, Blue, Red, Yellow. Auto Kick Yellow, Green, Red, Blue, Blue, Blue, Blue, Red. Best Buy Kid (Nick) Green, Red, Blue, Green, Red, Blue, Blue, Green. Euro Contest Winner (Johnny Viper) Blue, Red, Blue, Blue, Yellow, Yellow, Yellow, Green. Flame Color Green, Red, Green, Blue, Red, Red, Yellow, Blue. Gem Color Blue, Red, Red, Green, Red, Green, Red, Yellow. Hyperspeed Green, Blue, Red, Yellow, Yellow, Red, Green, Green. Invisible Characters Green, Red, Yellow, Yellow, Yellow, Blue, Blue, Green. Line 6 Green, Red, Yellow, Blue, Red, Yellow, Blue, Green. Performance Mode Yellow, Yellow, Blue, Red, Blue, Green, Red, Red. Quickplay Blue, Blue, Red, Green, Green, Blue, Blue, Yellow. Rina Blue, Red, Green, Green, Yellow, Yellow, Yellow, Green. Star Color Red, Red, Yellow, Red, Blue, Red, Red, Blue. Vocal Fireball Red, Green, Green, Yellow, Blue, Green, Yellow, Green.
Blood is always red. The shades of red; however, differ according to the amount of oxygen being carried. Deoxygenated blood is not blue only a darker shade of red.
roses are red violets are blue you'll always love me and I'll always love you