Amazing Sunflowers

I am totally amazed by these sunflowers when I come across them at our public park today. This time they appear mainly yellow in colour varied with different coloured circular centres, green, yellow and purple. What colours of these centres of interest butterflies or bees perceive is a question, but such flat, spacious "pads" are perfect landing sites for them.

From now on, I cast my eyes on these interesting flowers at a new angle. In these few days, I shall keep watching their change in colours.