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Date: Mon, 14 Jul 2014 22:08:24 -0400
From: Ian Chapman <ichapman AT videotron DOT ca>
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To: geda-help AT delorie DOT com
Subject: Re: [geda-help] How do PCB translucent layers work?
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Try File/Preferences Colors then expand Main, Layer or Selected then 
pick a color and double click it, fiddle with the triangle to get your 
desired color.

ie Layer colors/Layer color 1 make it pleasing and that's what that 
layer becomes.  Ian

   On 07/14/2014 07:16 AM, doragasu . wrote:
> I have a grey (R,G,B 229, 229, 229) background, a green (0, 255, 0) 
> top layer and a red (255, 0, 0) bottom layer.
>
> If I blend the background and the two layers, the color I get on PCB 
> is dark green (74, 199, 21), so I'm assuming there is some kind of 
> layer color weighting or something.
>
> Would it be possible to disable this weighting (in case it exists) and 
> also to disable blending with the background colour? I would like 
> something like what you get in Layout (OrCAD): there is a black 
> background, 100% green top layer and a 100% red bottom layer. When 
> they intersect you get yellow (255, 255, 0) color. Is this possible on 
> PCB?
>
> Also, is it possible to completely disble translucent layers? (better 
> if no rebuilding is needed).
>
> Thanks!