wtf its true. i did it with ray tracing and i had 4fps anyway, i dont use ray tracing normally.
anyway, the script is identic... and i made my own changes.
i dont know lua, but i changed some values, and translated the text to spanish, etc.
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hey dudes, i'm so happy with the script... but...
is there any way to change the opacity without change the color?
just /ec alpha 0.65 or /ec alpha 0.90 or something like that?

it's like a challenge. :P

Challenge? Pffahahaha.
Let me just lunch, I'll fix it then.

lol'd
yeah, for you its a bit change.
for me its a veeeeeeeery big and veeeeeeeeery hard challenge.

Doing a bit of ruby now, I'll do that later.

Figured I may as well do it before I go to bed:
Here.

Change log:
Added /ec alpha X
Also fixed the fact it actually echoed the commands.
Changed the messages for lulz.
Added proper indents (indent people, it looks horrible if you don't)

well, nice script!
but it have 1 mistake.
when you change the color the blood turns invisible. and you have to write again /ec alpha X
anyway i'm so happy with this.

Fixed.

well, thanks to everyone.
thanks to yoyo for make the first modification (BIG modification),
thanks to blam for adding the opacity,
and finally, thanks to psycore for fixing the little mistake.