Multicolor pinwheel effect.

[John R. Culleton]

I want to create a multicolor pinwheel effect for a
background, with the arms of each shade radiating out from a hub
and curved rather than straight. And I want the colors to blend
into each other as in a gradient. A rainbow gradient is an obvious
starting point.  

Would anyone like to suggest a sequence of tools to arrive at
this effect? 

I will post this query elsewhere, but will not crosspost.

-- 
John Culleton
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