I am trying to work out how the normal vector in a 
smooth triangle works(I posted a similar question in
povray.advanced-users and quickly realised I need to
back up a bit and start at the begining).

The docs say that the default for normals is 0.5, I assume
this is supposed to give me a regular(normal) surface. But
I put a smooth_triangle with 0.5 normals next to a plain ol'
triangle, each with the same pigment{Red}, and got two different
colors. Am I just making a dumb mistake? Or is this correct
for smooth_triangles?
Here's my code:

#include "colors.inc" 
global_settings{
     assumed_gamma 1.0
}
camera{
     location  <0.0, 1.0, -4.0>
     direction <0, 0, 1>
     right     <1.33, 0, 0>
     look_at   <0.0, 0.0, 0.0>
}
light_source{
     0*x
     rgb <1.0,1.0,1.0>
     translate <-10, 30, -30>
     fade_distance 55
     fade_power 100
}
plane { y, -1 pigment {color rgb <0.8,0.4,0.1>}}
sky_sphere{
  pigment{
    gradient y
    color_map { [0.0 color blue 0.6] [1.0 color rgb 1] }
  }
}
smooth_triangle{
	< 0, 0, 0> < .5, .5, .5>  // <Vertex1>  <SurfaceNormal1>
	< 1, 0, 0> < .5, .5, .5>  // <Vertex2>  <SurfaceNormal2>
	< 0, 1, 0> < .5, .5, .5>  // <Vertex3>  <SurfaceNormal3>
	pigment{Red}
}
triangle{
  < 0,  0, 0> // <Vertex1>
  <-1,  0, 0> // <Vertex2>
  < 0,  1, 0> // <Vertex3>
  pigment{Red}
}

-- 
...coffee?...yes please! extra sugar,extra cream...Thank you.

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