Back then, the flag also included pink and turquoise; it wasn't until 1979, when pink dye was found to be too expensive and turquoise got cut after the committee organising the 1979 Gay Freedom Day Parade wanted to split the colours evenly to fly the flag in two halves, that it became the iconic ROYGBV we recognise today. You can bet that everyone at your local Pride Parade will be waving their flags, as will you — but your rainbow mani can be completely one-of-a-kind.