please tell me i need this to make some art

Green screen what are you talking about ? and flitter or something like that ? i should help you if you explicate

?i dont understand anything here??

If you mean Chroma-key, idk if Gimp has a tool for that.


EDIT: Is this something of what you mean?

http://www.gimpguru.org/Tutorials/ReplaceForeground/

~simple Google search~

if you mean in toribash, use http://forum.toribash.com/showthread.php?t=58744 (if you have shaders).

and then use the magic wand tool

thanks to you to show the potential that things that i know have