Oh, the rainbow is out, is out!
So colourful, as colourful as the sky.
There is, RED, ORANGE, YELLOW, GREEN, BLUE, PURPLE, VIOLET and PINK, but there is one colour that we can’t even see with our eyes, can you guess it?
It is ULTRAVIOLET, a violet we can’t even see!
You can only see ultraviolet with a black light, it looks so pretty that I can marry it.