The lights are going out all over the CBD on Monday with the end of the Vivid festival – and that means needlessly killing off the world's largest and Australia's most successful interactive art work, Lighting the Bridge, by local lighting designers and magicians, 32 Hundred Lighting.

For everyone with a view of the western side of the bridge, Vivid has provided a fascinatingly varied and constantly changing rendering of the Sydney icon. Forget the rainbow road crossing, this is the technicolour dreamcoat of harbour crossings, the drab old coat hanger re-imagined nightly by members of the public. It brightens the western harbour as never before, redefining what public art can achieve.

So why turn it off? Spare that switch and save a renewed landmark, let the spectrum of glowing imagination continue to brighten Sydney nights, allow pilots on the glorious northern approach to continue to alert their passengers to the magic upon the harbour, the magic of the harbour city.

This is a light show that doesn't tire because it's redesigned nightly – everyone has a chance to paint the bridge in the colours and patterns and movement of their desire.