I'm not sure if they are all the same species but I just thought they look very much alike. They seem to be the same species just two different color patterns which are green and brown. They are absolutely everywhere in my yard.

Yes, they are all the same species, several people said that already. The point is: are they the same individual or different ones? There may even be males and females lumped together as same specimen (or same individual), or two different species or subspecies, for instance one has rougher texture than the others.
Nice set of images, by the way.

I don't mean to be rude but it's obvious they are different specimens.

they shouldn't be linked. BugGuide reserves Link for multiple images of the same individual. We will unlink these, but first we will copy David's comment from the first image, so that the IDs make sense once they are unlinked.

Chortophaga viridifasciata
Yes this is the species. They vary in color. You've managed to get a brown male (first shot), a brown female (second shot), green males (third and fourth shots - rather rare). This is the brown female.
… David J. Ferguson, 19 May, 2008