I have recently added a package for generating a variety of perceptually 
uniform colour maps which may be of interest to you
https://github.com/peterkovesi/PerceptualColourMaps.jl
However I do not consider transparency

Cheers
Peter

On Friday, February 12, 2016 at 5:48:06 PM UTC+8, Patrick Kofod Mogensen 
wrote:
>
> Is it possible to create a colormap as described in the title using 
> Colors.jl? I couldn't seem to find anything on Colormaps and 
> transparency/opacity.
>
> Best,
> Patrick
>

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