Smoky blue, violet, mauve then grey.  The colour changes as the delicate flowers unfurl, bloom and fade.

 

 

The colour changes as clouds or leaf shadows move across the sun; it changes with the angle of the sun as you move your head from side to side.

 

 

To a bee the base colour of the petals is probably irrelevant.  What matters is those guide lines leading to the honey.

 

 

But to a human eye the changeability of these fragile petals is part of their fleeting beauty.

 

 

And for those who’d prefer facts to poetic meanderings, this is a cultivar of Hibiscus syriacus called ‘Ultramarine’, growing in a pot in our small Paris garden.