Red is bold, red is strong
Red is power, it can’t do no wrong
But red is just a colour
No different from the other

Green is wealthy, green is kind
Green brings calm to a cluttered mind
But green is just a colour
No different from the other

Blue is soothing, blue is light
Blue is mysterious as the night
But blue is just a colour
No different from the other

So how come if red is just red, green is just green and blue is just blue is there a sense of division amongst them?
For colours are just colours, not divided boxes of purity.  
Just pretty pigments, nothing much else.