According to the docs (6.1.5.5)

"For example...
color My_Color red 0.5
this substitutes whatever was the red component of My_Color with a red
component of 0.5 however...
color My_Color + red 0.5
adds 0.5 to the red component of My_Color"

But the following scene seems to contradict this:

#version 3.5;

#declare MyCol1=  <1,1,0>;
#declare MyCol2=  <0,0,1>;

//Legal
#declare MyCol1a= MyCol1 * MyCol2;

// All non-legal
//#declare MyCol1b= MyCol1 * blue 0.5;
//#declare MyCol1c= MyCol1 blue 0.5;
//#declare MyCol1d= MyCol1 MyCol2;

... so, is this a bug in pov, the docs, or my understanding of them?

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