ROYGBIV is an acronym for the sequence of hues commonly described as making up a rainbow: red, orange, yellow, green, blue, indigo and violet.

Richard Of York Gave Battle In Vain — a traditional mnemonic device used to turn the initial letters of seven spectral colors into a sentence.  

Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук
Richard Of York Gave Battle In Vain — Ігар Ганчарук