On 25/02/2026 12:45, Bald Eagle wrote:
> I'm thinking that the red must be coming from something else.
> Post the whole scene, a link, or at least more to work from?

the scene :

#version 3.8;

#include "colors"

global_settings {
   assumed_gamma 1.0
   max_trace_level 5
   }
#default {
   finish {
     ambient 0.00
     emission 0.40
     diffuse 0.60
     }
   }

camera {
   location <40,20,22>
   up y
   right x*image_width/image_height
   look_at <0, a*0.60, 0>
   angle 36
   }

light_source {
   <290, 384, 1350>
   color White=1
   }

plane {
   y,0
   pigment { White }
   }

#declare a = 4;
box {
   <-a, 0, -a>, <+a, 2*a, +a>
   pigment { White }
   }


With the warning :
Parse Warning: Expected pure RGB color expression, unexpected filter and 
transmit components will have no effect.






-- 
kurtz le pirate
compagnie de la banquise

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