Heres a video of the 3.3v with voltage dividers (like the 3.3v setup in the previous post:
As you can see, it didnt work right, it did make the LEDs light up, but It was pretty wrong.
Heres a video of the 5v test setup (it uses 8 RGB LEDs, 8 150 ohm resistors, 16 100 ohm resistors, and 3 shift registers.) In this video I also include the 3.3v setup, without the voltage dividers, it runs pretty good w/out the dividers, but It may be causing some kind of damage, i dunno.