The colors are great, this has a calming feel to it. I kinda think there is too much going on here. I think the closest circle should be in focus. I think it also loses in competition with the Sydney Opera House in the background.
Photos of the SOH always brings me back beautiful souvenirs... great place... Oh yes !... your presentation... BEAUTIFUL... I just got carried away :-)))
I see the circles represented here, but it's hard not to look immediately past them to the harbor in the distance ... making that the focal point and relegating the circlular elements to something much less than the primary subject. Excellent photo regardless (beautiful light and nice composition).