Five neat effects!!!

[Bash321]

here they are!
I changed the colors. Everything else i like in them

[e-sarbak]

The first one
-You should change the colors for making it more appropriate to Kirupa site

The second one
-color
-Speed up the animation

Third one
-color
-Maybe it would ba better if you dont move them upwards

Fourth one
-color
-You should decrease the distance they move

Fifth one
-color
-You can have more background passers

...:)

[kirupa]

The color used on the site is a minor variation of: #E0F1F6 :)