Any colour as long as it's blue

I don't normally keep abreast of local Bristol news, but I had recently heard about the city's latest idiotic scheme brilliant idea for its taxi drivers. Apparently, some desk-bound jobsworths had decided in their wisdom that all city cabs should henceforth be any colour as long as it's 'Bristol blue', a precise shade found in Bristol glassware. The fact that the necessary respray would cost an average of £3000 and mean that the cab would be off the road for about three days, meaning three days' loss of earnings for the driver, either passed them by or was deemed to be unimportant, just as long as the city cabs presented a corporate image.
Not surprisingly, there was a bit of an outcry about this and the council did eventually concede that there could be a slightly wider interpretation of 'blue' in that it didn't have to be the one particular shade previously stipulated.
With me so far? Good.
So, having dealt with the cab drivers, the powers that be then turned their attention to private hire taxis and yes, you've guessed it, to avoid confusion, they can now be any colour except blue! Private hire taxis which have the misfortune to be blue (any shade) will no longer be licensed. Well, it is understandable. After all, there is so little difference between a cab (big) and a private hire cab (much like any ordinary car) that the public could so easily be confused.
And on the bright side, car resprayers are going to be doing a roaring trade. You really couldn't make it up!