I'm sure a couple of people already have this, but sometimes they were buggy so with the release of the newest beta I made this.

the color doesn't change at all on any angles, no sun, no reflections (except ghosts).

Full green screen ability, otherwise.

here is the code for it

background_color -0.11 1.13 -0.01
mirror_color -0.11 1.13 -0.01
floor_color 0 0 0
sunshine_color 0.50 0.50 0.50
ambient_color 0.50 0.50 0.50
fog_distance 0
sharp_shadow 0
sky_on 1
ambient_light_dir 0.58 0.58 0.58
sun_light_dir 0.58 0.58 0.58
sunbeam_color 0.50 0.50 0.50
sun_color 0.50 0.50 0.50
sky_color 0.50 0.50 0.50
polar_light_color 0.50 0.50 0.50
polar_light_dir 0.58 0.58 0.58
sky_blend_power 0.50

i encourage you to name it pirate-gs, however gs is fine for me too.

I hope this helps anyone needing a 'green screen'.

Great job. ;)
I made one, but the reflections/other stuff were a bit different, so it wasn't a "complete greenscreen".

u use notepadd++ cuzi was goan use ur code to make a blue and black one?

Ah,very nice job man this will be helpful ^^

Can you Make the sky blue or somthing?..

so theres like Green floor with a blue sky

so you can use both Blue and Green Screen.?.. that would be great

or maybe make a full Blue Screen?

I'm fairly sure my greenscreen was pretty damned perfect, but whatever, gj i suppose :P