Symbols of colors used in Portugal for transport

[Hans Åberg via Unicode]

> On 29 Apr 2019, at 21:34, Doug Ewell <doug at ewellic.org> wrote:
> 
> Hans Åberg wrote:
> 
>> The guy who made the artwork for Heroes is completely color-blind,
>> seeing only in a grayscale, so they agreed he coded the colors in
>> black and white, and then that was replaced with colors.
> 
> Did he use this particular scheme? That is something I would expect to
> see on the scheme's web site, and would probably be good evidence for a
> proposal.

They did not describe what system they used, but my impression was different patterns, so it would still look artistic, only in black and white. However it was a long time ago, so my memory may fail me. It is described in some of the DVD extra material.