Blue and red.
No. A rainbow is 6...or 7 if you will...different colors put together...(red,orange,yellow,green,blue,violet aka purple or red,orange,yellow,green,blue,indigo,violet aka purple)but, when all put together in the right order...what color is it?
All colors...
colorfull
multicoloured
Well, purple is a combination of red and blue. Orange is a combination of red and yellow. Blue is a primary color. I would assume these colors put together would make a brown or a black.
Brown
well pretty much all colors if you put them together
The are only one color and that is black put together
yes
White light is all the colors of the light spectrum put together
you put together a computer and a computer and you will create the Internet.
Two or more words put together to create a single complex idea could be called a phrasal compound.