[Gimp-developer] green channel value in gimpviewrenderer.c

[Elle Stone <ellestone ninedegreesbelow com>]

From curiosity, in this file 
https://github.com/GNOME/gimp/blob/master/app/widgets/gimpviewrenderer.c, on 
line 160:

gimp_rgba_set (&green_color, 0.0, 0.94, 0.0, GIMP_OPACITY_OPAQUE);

Why is the green channel value for "&green_color" set to 0.94 rather 
than 1.0? Does this affect anything during editing? Or is this just a 
random default value?

The channel values for the other colors in the list are either 0.0 or 1.0.

Also, what are the functions in this file for? Why is the blue channel 
not used, but rather only the red and green channel?

Best,
Elle