Wow.  I think that works really well.  If you look closely, you just see 
red, green and blue but an overall glance gives you subtle shades of 
color.  Cool!

David Buck

On 2022-02-11 2:20 a.m., m@b wrote:
> On 06/02/2022 11:22 pm, David Buck wrote:
>> This makes me wonder if you could get the illusion of a full-color 
>> image by having three spirals - one red, one green and one blue - that 
>> are separate but which spiral out together.
>>
>> David
> 
> It's quick and dirty, but here it is, 3 spirals, one red, one green and 
> one blue:

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