Nottingham now has a permanent 'rainbow' road featuring the colours of the LBGT+ community.
The colours have been painted on Broad Street for the Pride festival on July 27, but will stay in place after the event.
However, if you've seen pictures of the road - or indeed have been along in person to 'give your regards to Broad Street' - you'll have noticed there are only six colours included.
This is because the official Rainbow Flag of the LBGT+ community only has six colours.
But why? What happened to poor old indigo? We all remember Richard Of York Gave Battle In Vain, so where has the 'In' gone?
Here's what you need to know.
The original Rainbow Flag
The first Rainbow Flag was designed in 1978 by Gilbert Baker, a gay activist living in San Francisco.
At the time the gay and lesbian movement was widely represented by a pink triangle logo, but there was disquiet about this in some quarters - including from Baker - because of its links to the symbol which had been used to identify homosexual prisoners in Nazi camps.
Baker designed the Rainbow Flag for the 1978 San Francisco Gay Freedom Day Parade - but it was a different version to the one we know today. It actually had eight colours, as below.
Baker assigned specific meanings to each of the colours: Pink = Sex, Red = Life, Orange = Healing, Yellow = Sunlight, Green = Nature, Blue = Magic, Indigo = Serenity, Violet = Spirit.
But there was a problem. It was difficult to source the pink fabric needed for the top layer, and so both Baker and the Paramount Flag Company - which had also started selling the flag - decided to remove that layer.
The seven-colour version
That left the flag with seven colours.
This was pretty much the traditional 'rainbow' colours of red, orange, yellow, green, blue, indigo and violet (as first identified by Sir Isaac Newton, fact fans), with the fifth layer more of a turquoise than a traditional blue.
But this version didn't last long, either.
In 1979 the flags were hung out vertically off lampposts in Market Street in San Francisco, but the odd number of stripes meant that the middle stripe was obscured by the lamppost.
It was decided to cut the number of colours by one, to leave an even number of colours.
Turquoise went. Indigo went. And in their place came a darker blue which is the colour still used on the flag today.
The modern-day flag
Baker's colours of red, orange, yellow, green, blue, and violet are the ones which have generally been used for three decades now.
There have been tweaks along the way with, for example, a black stripe added to highlight the impact of AIDS.
And some groups will still go with the full seven colours, as the picture below of Forest fans at Pride in Nottingham last year shows.
But most stick with the design of Gilbert Baker. He died in 2017, but his idea lives on across the globe.
As he said in his memoir: "A Rainbow Fag was a conscious choice, natural and necessary. The rainbow came from earliest recorded history as a symbol of hope."
* With thanks to the Gilbert Baker website for additional information.
