colours of the rainbow

[Jack the Cat]

What are the correct order of the colours of a rainbow

[OBonio]

Red Orange Yellow Green Blue Indigo Violet

[SteveD]

Round Old York Green Banks I View.

[ezapf]

A man named Roy G. Biv will tell you.

[magicdice]

provided you're starting with the longest wavelength, which we generally do

[5029]

ROY Good Boy Is Very

[Bert]

In some repects there is, of course, an infinite number of colours in the rainbow.  I heard that when people first thought about the colours, they counted six (red, orange, yellow, blue, violet).  However, since seven has long been seen to be a magical or mystical number, it was preferred that there be seven colours, so 'indigo' was invented for the deep blue 'between' blue and violet.  They could just have easily chosen 'turquoise' between green and blue or 'vermilion' between red and orange.

[ezapf]

Yes, Bert, but then Roy G. Biv would have to change his name.